restaurants, so as to protect patrons from living and deceased insects, is the type of
concern that one would take into account when operating a restaurant.
To look at the duty issue from the opposite angle is perhaps helpful. If a
restaurant were overrun with poisonous spiders, it would be shocking to say the
10
restaurant had no duty whatsoever to protect patrons from the spiders.1 However, that is
what happened in the trial court. The trial court concluded that a restaurant has no duty
to use reasonable care in relation to black widow spiders. Because the trial court
concluded there is no duty, the trial court created a categorical exception to the general
rule that one must exercise due care. (See Cabral, supra, 51 Cal.4th at p. 777 [the
exemption concerns the “entire category of negligent conduct”].) We cannot agree with
such a conclusion.
It is possible that it will be found that the Mission Inn met its reasonable standard
of care—that despite reasonable efforts being made, an accident occurred, which is
relevant to breach. However, under the generalized foreseeability analysis that is
relevant to duty, because it is reasonably foreseeable that the failure to take any action
more than recording the presence of spiders could lead to harm, there is not a good
reason in the foreseeability portion of the analysis to create an exception to the general
rule that there is a duty to exercise reasonable care. (See Cabral, supra, 51 Cal.4th at
p. 775 [“generalized sense of foreseeability pertinent to the duty question”].)
As set forth ante, foreseeability is not the only aspect of the duty analysis.
“ ‘ “ ‘[The] existence [of a duty] depends upon the foreseeability of the risk and a
weighing of policy considerations for and against imposition of liability.’ ” ’ [Citation.]
1 The duty analysis is not dependent on the facts of this case. (Cabral, supra, 51 Cal.4th at p. 774.) We are not asserting that the Mission Inn was overrun with spiders. We are looking at the alleged negligent conduct, and that conduct is alleged to be having done nothing in relation to black widow spiders other than recording their presence. The exact amount of spiders at issue in this case is not relevant to this particular analysis.
11
These policy considerations include ‘ “the moral blame attached to the defendant’s
conduct, the policy of preventing future harm, the extent of the burden to the defendant
and consequences to the community of imposing a duty to exercise care with resulting
liability for breach, and the availability, cost, and prevalence of insurance for the risk
involved.” [Citation.]’ [Citation.] ‘A duty of care will not be held to exist even as to
foreseeable injuries . . . where the social utility of the activity concerned is so great, and
avoidance of the injuries so burdensome to society, as to outweigh the compensatory
and cost-internalization values of negligence liability.’ ” (Kesner, supra, 1 Cal.5th at
pp. 1149-1150.)
“ ‘The overall policy of preventing future harm is ordinarily served, in tort law,
by imposing the costs of negligent conduct upon those responsible.’ [Citation.] In
general, internalizing the cost of injuries caused by a particular behavior will induce
changes in that behavior to make it safer. That consideration may be ‘outweighed, for a
category of negligent conduct, by laws or mores indicating approval of the conduct or
by the undesirable consequences of allowing potential liability.’ ” (Kesner, supra, 1
Cal.5th at p. 1150.)
In regard to moral blame, the act of doing nothing, other than recording the
spiders’ presence, while one’s restaurant is inhabited by black widow spiders thus
exposing patrons to a risk of harm, is morally blameworthy because it is morally wrong
to do nothing while exposing unknowing patrons to a risk of harm. In regard to
preventing future harm, if restaurants have no liability for injuries caused by black
widow spiders, then restaurants will have less incentive to protect patrons from the harm
12
posed by the spiders. By not creating an exception to the general duty rule, restaurants
will be required to exercise reasonable care in relation to black widow spiders thus
lessening the risk of future harm.
In regard to the burden on the restaurants, restaurants are already required to
keep their premises free of vermin, which includes mice, rats, and cockroaches. (Health
& Saf. Code, §§ 113939, 114259.1.) Thus, there is little burden on restaurants to keep
their premises free from black widow spiders because they are already required to keep
their premises free from other pests. Whatever means a restaurant uses to keep their
premises free of cockroaches, such as an exterminator service, could also be used to
keep the restaurant free of black widow spiders without much more effort on the part of
the restaurant.
As to the cost and prevalence of insurance due to a breach, an injury related to a
spider bite would likely fall under the restaurant’s insurance policy for personal injuries.
For example, in the instant case, the Mission Inn asserts, “Injury claims (including
alleged insect bites) are covered by [the Mission Inn’s] commercial general liability
insurance.” Personal injury insurance is widely available for acts of negligence.
The consequences to the community of not creating an exception to the general
rule, i.e., retaining the general rule that restaurants must exercise reasonable care, would
be that the restaurants’ pest control costs and insurance costs might be marginally
higher. Due to the marginal costs, there likely will not be a consequence to the
community. To the extent we are incorrect and the extermination or insurance costs are
13
more than marginal, then the community might experience slightly more expensive
restaurant meals.
As set forth ante, it is foreseeable that a restaurant owner’s failure to exercise
reasonable care in relation to black widow spiders on the restaurant’s premises will
place patrons at risk of injury due to spider bites. The burden on restaurants to exercise
reasonable care is not great because restaurants are already required to have pest control
measures in place for cockroaches and the insurance for injuries caused by spiders is
widely available. The cost to the community will likely be nothing, but could be
slightly more expensive restaurant meals. Given the foregoing analysis, we conclude
there is not an overriding policy reason that justifies exempting restaurant owners from
the general rule to exercise reasonable care in relation to black widow spiders on their
property. Accordingly, the general rule of duty applies. (Civ. Code, § 1714, subd. (a).)
Restaurant owners have a duty to exercise reasonable care in relation to black widow
spiders posing a risk of injury to patrons on the restaurant premises.
The Mission Inn asserts that if a duty is imposed upon it then that will “transform
the Mission Inn into an insurer of its guests’ safety as respects spider bites.” The
Mission Inn asserts the existence of “a duty to prevent spider bites would be tantamount
to imposing absolute liability upon [the] Mission Inn.” Contrary to the Mission Inn’s
position, the Mission Inn is not strictly liable for any spider bite that occurs on its
property. Reasonable care typically does not mean preventing any and all harm; it
means exercising reasonably prudent caution under the circumstances. (Hayden v.
Paramount Productions (1939) 33 Cal.App.2d 287, 293 [“Reasonable care, not
14
insurance against every possible accident, is the measure of liability”].) Accordingly,
we are not persuaded that a duty to exercise reasonable care in relation to black widow
spiders will create absolute liability for the Mission Inn.
The Mission Inn contends the foregoing discussion is “irrelevant” because the
Mission Inn concedes it owes patrons a duty of reasonable care. In the Mission Inn’s
motion for summary judgment and respondent’s brief, it has combined law and
argument related to three issues: (1) the existence of a duty; (2) what the standard of
care should be, e.g., reasonable care; and (3) the meaning of reasonable care in the
circumstances of this particular case. For example, in the Mission Inn’s respondent’s
brief, it writes, “This Court must decide the existence and the scope of Mission Inn’s
duty to Coyle.” (Italics added.) We chose to address the substance of the issue
concerning whether a duty exists because part of the Mission Inn’s argument concerns
the nonexistence of a duty, even if the Mission Inn did not intend to argue that issue.
2. REASONABLE CARE
“In most cases, courts have fixed no standard of care for tort liability more
precise than that of a reasonably prudent person under like circumstances.” (Ramirez v.
Plough, Inc. (1993) 6 Cal.4th 539, 546-547.) This is because “[e]ach case presents
different conditions and situations. What would be ordinary care in one case might be
negligence in another.” (Eddy v. Stowe (1919) 43 Cal.App. 789, 797 (Eddy).)
For example, in car accident cases, in some circumstances, the reasonably
prudent thing is to stop the car; while in another case, under different circumstances, the
reasonably prudent thing is to slow the car; yet, in a third case, under other
15
circumstances, the reasonably prudent thing is to proceed at a higher rate of speed; and
in a fourth case, in different circumstances, the reasonably prudent thing is to continue
at the current speed and change nothing. (Eddy, supra, 43 Cal.App. at p. 797.)
Thus, it is the jury that “has the burden of deciding not only what the facts are
but what the unformulated standard is of reasonable conduct.” (Ramirez v. Plough, Inc.,
supra, 6 Cal.4th at p. 547.) In sum, it is the trier of fact who decides what the facts are
and what reasonable care means within those facts.
The Mission Inn’s evidence includes a declaration from the Mission Inn’s
director of property operations, who declared, “Black widow sightings at the Mission
Inn are exceedingly rare. Since 2012, only two black widow sightings were reported by
employees. The Mission Inn has never received a black widow report or complaint
from a guest or patron.” The Mission Inn’s evidence reflects Coyle was allegedly
injured on May 8, 2013. The Mission Inn’s evidence also includes the declaration of
the chief executive officer of HospitalityEducators.com, who declared black widow
spiders are not “a major pest in this market.”
If a jury credits the evidence offered by the Mission Inn, the jury might find that
it is “exceedingly rare” for black widow spiders to be found at the Mission Inn, yet, the
Mission Inn had two sightings of black widow spiders in 2012. The jury might reason
that something was clearly wrong at the Mission Inn if it is “exceedingly rare” to see a
black widow spider at the Mission Inn, yet two were seen within an approximately one-
year period. Due to something being amiss concerning black widow spiders on the
property, the jury could rationally conclude the reasonable course of conduct for the
16
Mission Inn was to put pest control measures in place pertaining to black widow
spiders. Reasonable measures might include having an exterminator spray a pesticide
targeted at black widow spiders or placing warning signs on the property. Accordingly,
crediting the Mission Inn’s evidence does not provide for an absolute conclusion in
favor of the Mission Inn, i.e., the jury would necessarily find that reasonable care
required no action in relation to controlling the population of black widows or warning
guests.
To be clear, we are not stating what “reasonable care” means in this case. That
determination will depend upon what evidence the trier of fact finds true. Once the trier
of fact determines the facts of the case, it can decide what reasonable care means in the
circumstances of this case. (Eddy, supra, 43 Cal.App. at p. 797 [“Each case presents
different conditions and situations. What would be ordinary care in one case might be
negligence in another”].)
The Mission Inn contends it cannot have a duty to Coyle concerning spiders
unless it had knowledge of the risk of Coyle being bitten by a spider, and the Mission
Inn asserts it did not have knowledge of spiders on the Mission Inn’s patio. The
Mission Inn’s argument will be relevant when arguing the meaning of “reasonable care”
to the trier of fact. The Mission Inn might present evidence that it lacked any
knowledge of spiders on the patio. The Mission Inn also has evidence that its property
is the size of one city block. If the trier of fact believes the Mission Inn’s evidence, then
the trier of fact may conclude that, because the Mission Inn is the size of one city block,
a reasonably prudent person would not have taken any action related to the few spiders
17
seen on the property—that the duty of reasonable care did not require anything more
than recording the spiders’ presence. In other words, the jury will decide what
reasonable care means after deciding the facts. At this point in the case, the Mission
Inn’s argument will not support summary judgment on the basis of a lack of duty.
3. PRIOR CASE FROM THIS COURT
In Brunelle v. Signore, this court considered whether the owner of a private
residence had a duty to prevent the plaintiff from being bitten by a brown recluse spider.
(Brunelle v. Signore (1989) 215 Cal.App.3d 122, 125, 128 (Brunelle).) This court noted
that the general rule is that all persons have a duty to use reasonable care to prevent
injuries to others. (Id. at p. 128.) This court then wrote, “Whether a duty of care exists
‘is a question of law to be determined on a case-by-case basis.’ ” (Ibid.)
This court concluded that the private homeowner did not have a duty to protect
guests from spiders because (1) it was not generally known that brown recluse spiders
were indigenous to the relevant area, (2) the homeowner did not know that brown
recluse spiders were prevalent in the area of the residence, (3) the homeowner had not
previously observed a brown recluse spider inside or outside the home, and (4) the
spider that bit the plaintiff had not previously been seen by the homeowner or the
plaintiff. This court explained that, given the foregoing circumstances, a bite by a
brown recluse spider was unforeseeable and thus there was no duty. (Brunelle, supra,
215 Cal.App.3d at p. 129.)
18
This court then went further by writing, “Imposition of a duty even in those cases
where the homeowner shared general knowledge with the public at large that a specific
harmful insect was prevalent in the area but the homeowner had not seen the specific
harmful insect either outside or inside his home would impose a duty on the owner or
occupier of the premises that would also be unfair and against public policy. In either
of these instances, the burden on the landowner would be enormous and would border
on establishing an absolute liability. Further, the task of defining the duty and the
measures required of the owner or occupier of private residences to meet that duty
would be difficult in the extreme.” (Brunelle, supra, 215 Cal.App.3d at pp. 129-130.)
This court concluded, “The law does not impose a duty of extraordinary care.
Imposition of such a duty here . . . would impose an intolerable burden on home-owners
and would in effect impose an absolute liability on the homeowner for injuries caused
by insect or spider bites on their premises.” (Brunelle, supra, 215 Cal.App.3d at
p. 131.) This court affirmed the order granting summary judgment in favor of the
defendant. (Id. at pp. 126, 131.)
In Brunelle, different aspects of the duty analysis were improperly mixed
together. For example, this court discussed whether a duty existed (is there a duty of
care), but mixed that discussion with what the standard of care should be (“[t]he law
does not impose a duty of extraordinary of care”). (Brunelle, supra, 215 Cal.App.3d at
pp. 127, 131.) Ideally, in that opinion, the issues would have been addressed separately:
(1) generically, not dependent on the facts of the case, is there a duty of care; (2) if yes,
should the usual standard of reasonable care apply; (3) if no, should the standard be
19
extraordinary care; and then (4) in looking at the facts of the case, if the issue is not
reasonably disputed, what does reasonable or extraordinary care mean.
If, on a motion for summary judgment, the court uses the evidence to determine
the facts of the case, then decides a dispute regarding what reasonable care requires, and
then uses those determinations to decide if a duty exists as a matter of law, then the jury
has little purpose. As our Supreme Court has explained, “To base a duty ruling on the
detailed facts of a case risks usurping the jury’s proper function of deciding what
reasonable prudence dictates under those particular circumstances.” (Cabral, supra, 51
Cal.4th at p. 774.)
In Brunelle, this court used the facts of the case to decide (1) what reasonable
care would be, (2) why extraordinary care was not required, and (3) whether a duty
existed as a matter of law. The opinion is an illustration of why courts must be careful
in using the specific facts of a case when analyzing the issue of duty because one can
too easily usurp the jury’s role. It is the jury who must decide what reasonable care
means within the facts of a case such as this.
For example, a prominent issue in the instant case, which the trier of fact will
need to decide, is whether, given the size of the Mission Inn and the number of spiders
reported to the Mission Inn, was the reasonably prudent thing (1) warning patrons about
black widow spiders; (2) using pesticide to control the black widow population;
(3) having a professional exterminator actively search the premises for black widows on
a weekly, monthly, or quarterly basis; (4) having employees report spider sightings if
20
they happen to come across a spider while working on other tasks; or (5) some other
action.2
The point here is that, in the instant case, the parties are disputing what
reasonable care means, i.e., what was the reasonably prudent action in the
circumstances. Given that dispute, and that there is evidence that could support a
finding in favor of Coyle, e.g., that the spraying of pesticide or posting of warning signs
was needed, it is not the role of the court to decide what reasonable care means in the
circumstances of this case. It is for the jury to decide. (Cabral, supra, 51 Cal.4th at
p. 774 [“the jury’s proper function [is] deciding what reasonable prudence dictates
under those particular circumstances”].) In sum, we do not follow the precedent of
Brunelle.
D. BREACH
Breach is the failure to meet the standard of care.3 (Johnson v. Superior Court
(2006) 143 Cal.App.4th 297, 305.) Therefore, a breach in this case would mean the
Mission Inn failed to exercise reasonable care in relation to black widow spiders that
2 The matter is not required to be decided by the trier of fact. For example, if the Mission Inn produces undisputed evidence that the most action any restaurant owner would reasonably take is spraying pesticide targeted at black widow spiders, and the Mission Inn produces undisputed evidence that it sprayed pesticide targeted at black widow spiders, then the matter could be resolved via summary judgment. 3 The trial court’s ruling focused on the element of duty. On appeal, the Mission Inn asserts (1) Coyle has confused breach and duty, and (2) “there are no triable issues of any material fact” and therefore “this Court may not reverse and remand for a trial of facts.” The Mission Inn’s argument could be understood as the Mission Inn attempting to argue all of the elements of the torts of negligence and premises liability. Therefore, in order to address the Mission Inn’s concerns, we will address all the elements.
21
pose a risk of injury to patrons on the Mission Inn’s premises. “To be entitled to
summary judgment in [its] favor, [the Mission Inn was] required to present evidence
that would preclude a reasonable trier of fact from finding it was more likely than not
that [the Mission Inn’s acts or omissions] fell below the standard of care. Only if [the
Mission Inn was] successful in meeting this burden does the burden shift to [Coyle] to
demonstrate the existence of a triable issue of material fact. [Citation.]” (Ibid.)
The Mission Inn asserts that its pest control system “surpassed the industry
standard.” The Mission Inn provides the declaration of the chief executive officer of
HospitalityEducators.com, John J. Hogan, who attests that the Mission Inn’s pest
control “exceeded traditional hospitality industry standards of care.” Hogan’s opinion is
based upon (1) reviewing three pest control contracts between the Mission Inn and pest
control companies; (2) the pest control companies’ Better Business Bureau records;
(3) online reviews of pest control companies; (4) Web sites of other pest control
companies in the market area; (5) online reviews of guests who stayed at the Mission
Inn; (6) online research concerning black widow spiders in California hotels;
(7) university-level textbooks concerning risk management in the hospitality industry;
and (8) a telephone discussion with a hospitality industry insurance broker.
As set forth ante, restaurants are required to keep their premises free of vermin,
which includes mice, rats, and cockroaches. (Health & Saf. Code, §§ 113939,
114259.1.) When Hogan declares that the Mission Inn’s pest control exceeded industry
standards, it is unclear to what pests he is referring. It is possible the Mission Inn had
exceptional cockroach control, but no measures in place for spiders.
22
As examples: (1) a pest control receipt dated March 16 or 18, 2013, reflects the
Mission Inn was treated for cockroaches, rats, and mice; (2) a pest control receipt dated
April 15, 2013, reflects the Mission Inn was treated for cockroaches, rats, and mice; and
(3) a pest control receipt dated May 16, 2013, reflects the Mission Inn was treated for
cockroaches. It is unclear what, if anything, the Mission Inn did to control the
population of black widow spiders.
The Mission Inn’s director of property operations, Ronald Monteiro, declared
that the Mission Inn kept a log of the pests reported to have been seen on the premises.
The log reflects that, since 2012, two black widow spiders were reported. The log book
is given to the Mission Inn’s pest control contractor to review.4 It is unclear from this
evidence what, if anything, the exterminator recommended to the Mission Inn about the
black widow spiders. It is possible the exterminator recommended the entire hotel be
sprayed with a pesticide to exterminate black widows, and the hotel decided not to
follow the recommendation.
Thus, the hotel had pest control procedures in place, but it is unclear what, if
anything, the hotel did concerning spiders. If a jury finds that the Mission Inn took no
action in relation to controlling the population of black widow spiders or warning
guests, the jury might conclude those omissions constitute a failure to meet the standard
4 Our review of the logbook reflects that there were three black widow sightings prior to Coyle’s alleged injury: (1) July 1, 2012; (2) July 17, 2012; and (3) July 19, 2012. There were also various generic spider sightings, without any particular type of spider being identified, from March 2012 to May 8, 2013. After Coyle’s injury, black widow spiders were sighted at the Mission Inn on August 28, 2013, and September 16 or 18, 2013.
23
of reasonable care. Accordingly, the Mission Inn’s evidence does not preclude a
finding in favor of Coyle on the element of breach.
E. CAUSATION
The element of causation requires there to be a connection between the
defendant’s breach and the plaintiff’s injury. (State Dept. of Hospitals v. Superior
Court (2015) 61 Cal.4th 339, 358; Saelzler v. Advanced Group 400 (2001) 25 Cal.4th
763, 773.) Courts have found untreated bedbug infestations to be the cause of injuries
resulting from bedbug bites. (Mathias v. Accor Economy Lodging, Inc. (7th Cir. 2003)
Furniture Holdings, Inc. (1st Cir. 2011) 633 F.3d 1, 10 [“a rational jury . . . could have
drawn an inference of causation”].)
In support of its motion for summary judgment, the Mission Inn submitted a
partial transcript of Coyle’s deposition. Coyle testified that, while at the Mission Inn,
she “felt something really bad happen to [her] shoulder blade.” Coyle’s “muscle[s]
started to spasm almost immediately.” Coyle told her lunch companion, “‘I think I just
got bitten by something.’” The next morning, Coyle’s upper body was numb, later she
had numbness in her hips, and then she could not move her legs or arms. At the
hospital, doctors diagnosed Coyle with a toxic spider bite. Coyle believed the bite on
her back matched photographs of black widow bites on the Center for Disease Control
and Prevention’s Web site.
24
The evidence submitted by the Mission Inn reflects Coyle was bitten at the
Mission Inn, and the next day she suffered paralysis due to a spider bite. A trier of fact
could conclude from this evidence that, if the Mission Inn breached its duty, then that
breach caused Coyle to suffer injuries. In other words, if the Mission Inn did nothing to
(1) control the black widow population on its premises, or (2) warn patrons about black
widows on its premises, then a trier of fact might find those omissions resulted in Coyle
being bitten because the Mission Inn unreasonably permitted its patrons to be exposed
to black widow spiders. In sum, the Mission Inn’s evidence does not preclude a finding
in favor of Coyle on the element of causation.
F. DAMAGES
“Generally, damages are assessed as compensation for losses, injury or detriment
proximately caused by defendant’s tortious conduct.” (Breese v. Price (1981) 29 Cal.3d
923, 927.)
The Mission Inn submitted a partial transcript of Coyle’s deposition. Coyle
testified that she “couldn’t function at all with [her] legs or [her] arms” after being
bitten. Coyle was taken to the hospital where she was diagnosed with a toxic spider
bite. Coyle was admitted to the hospital. It can be inferred from this evidence that
Coyle suffered an injury in the form of a spider bite and had medical expenses related to
that injury. Accordingly, the Mission Inn’s evidence does not preclude a finding in
favor of Coyle on damages.
25
G. CONCLUSION
In sum, the Mission Inn had a duty to exercise reasonable care in relation to
black widow spiders that pose a risk of injury to patrons on its premises. (Civ. Code,
§ 1714, subd. (a).) If the trier of fact finds the Mission Inn’s evidence to be true, it
could find that (1) a reasonable person would have (a) warned patrons about the risk of
black widow spiders at the property, or (b) put pest control measures in place for black
widow spiders, such as pesticide being sprayed; (2) the Mission Inn did nothing with
respect to black widow spiders, reflecting breach; (3) Coyle was bitten by a black
widow spider at the Mission Inn, reflecting causation; and (4) Coyle suffered pain and
incurred medical expenses as a result of the spider bite, reflecting damages. Therefore,
because the Mission Inn’s motion for summary judgment does not preclude a finding in
favor of Coyle, we conclude the trial court erred by granting summary judgment.
H. EVIDENTIARY OBJECTIONS
Coyle contends the trial court erred by sustaining some of the Mission Inn’s
evidentiary objections to Coyle’s evidence. Our analysis of the summary judgment
issue is based upon the evidence submitted by the Mission Inn. The burden did not shift
to Coyle, therefore we did not rely upon the evidence submitted by Coyle. As a result,
any error related to the evidentiary objections is not relevant to resolving the issue on
appeal. Therefore, we decline to address the alleged errors in the trial court’s
evidentiary rulings. (See Garcia v. W & W Community Development, Inc. (2010) 186
Cal.App.4th 1038, 1044, fn. 3 [appellate court declining to rule on objections to
evidence when the evidence was not used in deciding the issue on appeal].)
26
DISPOSITION
The judgment of dismissal and order granting summary judgment are reversed.
Appellant Michele Coyle is awarded her costs on appeal.
CERTIFIED FOR PUBLICATION
MILLER Acting P. J. We concur:
CODRINGTON J.
FIELDS J.
27
AI Brief
AI-generated · verify before citing
Holding. The court held that restaurant owners have a duty to exercise reasonable care to protect patrons from the risk of black widow spider bites on their premises. Whether the defendant breached this duty by failing to take specific remedial actions is a question of fact for the jury.
Issues
Whether a restaurant owner owes a duty of care to patrons to protect them from black widow spider bites.
Whether the determination of 'reasonable care' in the context of spider control on restaurant premises is a question of law for the court or a question of fact for the jury.
Disposition. Reversed
Quotations verified verbatim against the opinion
“Restaurant owners have a duty to exercise reasonable care in relation to black widow spiders posing a risk of injury to patrons on the restaurant premises.”
“It is the trier of fact who decides what the facts are and what reasonable care means within those facts.”
“We conclude there is not an overriding policy reason that justifies exempting restaurant owners from the general rule to exercise reasonable care in relation to black widow spiders on their property.”