
762 N.E.2d 1227 (2002)
STATE FARM FIRE & CASUALTY COMPANY, Appellant (Garnishee Defendant Below),
v.
T.B., a minor by her parents and next friends, George BRUCE and Cathy Bruce, Appellees (Plaintiffs Below).
Murl L. Dobson and Vicki L. Dobson, Defendants below.
No. 53S01-0102-CV-00099.
Supreme Court of Indiana.
February 21, 2002.
*1228 Julia Blackwell Gelinas, Hugh E. Reynolds, Jr., James Dimos, Locke Reynolds LLP, Indianapolis, IN, Attorneys for Appellant.
Julie L. Michaelis, Wooden & McLaughlin LLP, Indianapolis, IN, Attorney for Appellee.
SHEPARD, Chief Justice.
State Farm Fire and Casualty Company declined to represent an insured homeowner in a suit brought by a child whom the insured's husband molested during daycare in the insured's home. The insured agreed to a consent judgment of $375,000, with the stipulation that none of it would be collected from the homeowner, and assigned all policy rights to the child. The trial court entered the judgment. It *1229 later granted summary judgment in favor of the child in proceedings supplemental against State Farm.
State Farm appeals, claiming that the trial court erred when it (1) estopped State Farm from raising the childcare exclusion in the homeowner's policy as a defense, and (2) awarded contractual damages in an amount exceeding the limits of the homeowner's policy. We agree.

Facts and Procedural History
Vicki Dobson operated a daycare center in her home in Bloomington, Indiana, for about twenty-five years. T.B. was one of her charges. On April 4, 1996, Dobson left T.B. and three other children with her husband Murl, while Dobson went across the street to care for her mother-in-law. Murl molested T.B. and was later convicted of child molesting.
About a year later, T.B. sued the Dobsons on premises liability grounds, alleging that Murl's conduct caused "emotional and physical sickness" and "permanently scarred [T.B.] emotionally." (R. at 20.) At the time of the molestation, the Dobsons owned a homeowner's insurance policy issued by State Farm. The policy provided for personal liability coverage according to the following terms:
SECTION IILIABILITY COVERAGES
COVERAGE LPERSONAL LIABILITY
If a claim is made or a suit is brought against an insured for damages because of bodily injury or property damage to which this coverage applies, caused by an occurrence, we will:
1. pay up to our limit of liability for the damages for which the insured is legally liable; and
2. provide a defense at our expense by counsel of our choice. We may make any investigation and settle any claim or suit that we decide is appropriate. Our obligation to defend any claim or suit ends when the amount we pay for damages, to effect settlement or satisfy a judgment resulting from the occurrence, equals our limit of liability.
...
(R. at 279-80.) The policy also included the following relevant exclusions:
SECTION IIEXCLUSIONS
1. Coverage L and Coverage M do not apply to:
...
(i) any claim made or suit brought against any insured by:
(1) any person who is in the care of any insured because of child care services provided by or at the direction of:
(a) any insured;
(b) any employee of any insured; or
(c) any other person actually or apparently acting on behalf of any insured; or
(2) any person who makes a claim because of bodily injury to any person who is in the care of any insured because of child care services provided by or at the direction of:
(a) any insured;
(b) any employee of any insured; or
(c) any other person actually or apparently acting on behalf of any insured.
This exclusion does not apply to the occasional child care services provided by any insured....
(R. 280-81.)
State Farm received notice of the lawsuit on May 8, 1997, in a letter sent by T.B. dated April 30, 1996. State Farm *1230 responded six days later with two letters, one acknowledging receipt of T.B.'s letter and explaining that an investigation was underway, and another addressed to the Dobsons. In the Dobson letter, State Farm questioned its obligation to defend or indemnify the Dobsons and reserved the right to deny coverage if a claim arose out of childcare services provided by the insured.
After receiving a copy of T.B.'s complaint, State Farm took statements from the Dobsons. It later advised them to procure legal representation at their own expense, explaining that previous cases similar to the Dobsons' were found not to be covered by the policy. State Farm subsequently denied coverage to the Dobsons, saying: "After a thorough investigation of the Complaint against [the Dobsons] we have concluded that the allegations against Murl Dobson do not involve an occurrence as defined by the policy." (R. at 902.) State Farm's letter also observed that "Murl and Vicki Dobson were providing full-time childcare services for many children and have done so for many years." (R. at 904.)
On November 5, 1997, T.B. and the Dobsons tendered an offer of judgment and covenant agreement which the trial court accepted. The Dobsons agreed to assign to T.B. all rights, interests and remedies against State Farm arising from their homeowner's policy. The agreement also provided for a money judgment of $375,000, conditioned upon T.B.'s promise not to execute on the Dobson's personal assets.
About a month after entry of judgment, T.B. filed a verified motion for proceedings supplemental and garnishment against State Farm. State Farm and T.B. filed cross motions for summary judgment. The trial court granted summary judgment to T.B., and State Farm appealed. The Court of Appeals affirmed the summary judgment, though it reduced the award amount to the policy limit, which was $300,000. State Farm Fire & Cas. Co. v. T.B. ex rel. Bruce, 728 N.E.2d 919 (Ind. Ct.App.2000). We grant transfer.

Summary Judgment Standard of Review
Summary judgment is proper if the evidence shows there is no genuine issue of material fact and the moving party is entitled to a judgment as a matter of law. Ind. Trial Rule 56(C); Butler v. Peru, 733 N.E.2d 912 (Ind.2000). The courts construe all facts and reasonable inferences drawn from those facts in a light most favorable to the nonmoving party. Butler, 733 N.E.2d at 915. On appeal the nonmovant has the burden of proving that the grant of summary judgment was erroneous, but we review the trial court's decision carefully to ensure that the nonmovant was not improperly denied his day in court. Ind. Dept. of Envtl. Mgmt. v. Med. Disposal Servs., Inc., 729 N.E.2d 577 (Ind.2000).

I. Collateral Estoppel
State Farm first asserts that summary judgment in T.B.'s favor was inappropriate because the trial court improperly estopped State Farm from raising the childcare exclusion as a defense in the garnishment proceeding. State Farm specifically argues that it should not be bound by factual statements contained in T.B.'s consent judgment that were not necessary to the resolution of the underlying action.
A. To Defend or Not to Defend. Collateral estoppel, also referred to as "issue preclusion," describes the binding effect of a previous judgment regarding a particular issue on the parties and their privies in a subsequent action. Liberty Mut. Ins. Co. v. Metzler, 586 N.E.2d 897, *1231 900 (Ind.Ct.App.1992). "The doctrine of collateral estoppel applies to insurance contracts and an insurer is ordinarily bound by the result of litigation to which its insured is a party, so long as the insurer had notice and opportunity to control the proceedings." Id. (citations omitted).
An insurer may avoid the effects of collateral estoppel by: (1) defending the insured under a reservation of rights in the underlying tort action, or (2) filing a declaratory judgment action for a judicial determination of its obligations under the policy. Id. at 902 (citing State Farm Mut. Auto. Ins. Co. v. Glasgow, 478 N.E.2d 918 (Ind.Ct.App.1985)). Either of these actions will preserve an insurer's right to later challenge a determination made in the prior action.
An insurer may also elect not to defend an insured party in a lawsuit if, after investigation of the complaint, the insurer concludes that the claim is "patently outside the risks covered by the policy." Id. at 901 (citations omitted). Such a course is taken at the insurer's peril because the insurer will be "bound at least to the matters necessarily determined in the lawsuit." Frankenmuth Mut. Ins. Co. v. Williams, 645 N.E.2d 605, 608 (Ind.1995) (citation omitted)(emphasis added).
State Farm received notice of T.B.'s complaint against the Dobsons and promptly investigated. State Farm subsequently decided not to defend the Dobsons and "concluded the allegations against Murl Dobson do not involve an occurrence as defined by the policy." (R. at 902.) Neither did State Farm file for declaratory judgment. Consequently, State Farm is bound to the matters necessarily determined in the lawsuit.
B. Matters Necessarily Determined. State Farm concedes that collateral estoppel prevents it from disputing certain findings necessary to establish the Dobsons' liability, such as the finding that the molestation was negligent. State Farm challenges, however, factual statements included in the consent judgment establishing that the child's injury was unrelated to daycare activities. It says this finding was "not a necessary element of the consent judgment." (Appellant's Br. at 13.) State Farm observes that T.B. and the Dobsons "characterize[d] the events in a very specific manner, with the obvious intent of seeking to bring the judgment within the coverage of the policy." (Id.)
The offered judgment, tendered by T.B. and the Dobsons and entered by the trial court, indicated:
The [Dobsons] represent that the occurrence of misfeasance ... proximately resulting in serious bodily injury and harm to [T.B.] was separate from, independent of, and had no direct or indirect factual or legal connection or relationship to Vicki L. Dobson's separate and sole ownership and operation of her limited, part-time child care activities and services. The existence of said day care activities and services is only an independent and coincidental circumstance which does not give rise to any breach of duty or legal responsibility as relevant to the occurrence and injuries described herein.
(R. at 84-85.) We agree with State Farm that these characterizations were unnecessary to sustain T.B.'s complaint for damages regarding negligence and premises liability. (See R. at 20-21.) The statement's apparent sole purpose was to isolate the molestation from the childcare activities.
In Frankenmuth, 645 N.E.2d at 608, we explained that an insurer having sufficient notice of the lawsuit is "bound at least to matters necessarily determined in the lawsuit" when the insurer declines to defend *1232 or seek declaratory judgment. The term "at least" in the holding signifies only a minimum requirement. Frankenmuth, therefore, left some question of whether an insurer is bound as to matters not "necessarily determined." Consideration of the requirement that adequate notice precede application of collateral estoppel persuades us not to broaden the portions of a consent agreement to which an insurer is bound.
The notice requirement provides the insurer with a base of information from which to determine whether to participate in a lawsuit. Specifically, prior notice alerts an insurer of the factual determinations that will be made in order to resolve the litigation. Thus, an insurer's failure to participate in the action will bind it to those determinations. Unnecessary determinations are less predictable. Estopping an absent party from contesting unnecessary matters settled upon by the consenting parties invites collusive or fraudulent determinations.
T.B.'s lawsuit against the Dobsons claimed personal and premises liability. The portions of the consent agreement that resolved these issues are binding on State Farm.
T.B.'s claim did not specifically address State Farm's contractual obligations under the Dobsons' homeowner's policy. The consent agreement, nevertheless, did. The statement that T.B.'s molestation was separate from Vicki Dobson's daycare services was unnecessary to resolve T.B.'s complaint. It was thus tantamount to dictum, and State Farm should not have been estopped from challenging it during proceedings supplemental.
C. Issues of Material Fact. Without contesting the consent agreement's determination that T.B. was a "guest" in the Dobsons' home on the day she was molested, State Farm asserts that T.B. was receiving child care from the insured, a condition excluded from the Dobsons' personal liability coverage.[1] The policy states that coverage does not apply to "any person who is in the care of any insured because of child care services provided by or at the direction of: (a) any insured." (R. at 280.) State Farm argues that the consent agreement is ambiguous and that "[t]he use of the term `guest' is not inconsistent with a finding that [T.B.] was present as the recipient of paid childcare services provided by Vicki Dobson." (Appellant's Br. at 13 n. 3.)
Relying on the consent agreement's use of the term "guest," T.B. argues that the issue of her legal status on the premises has been determined and that State Farm is precluded from relitigating the matter.[2] (Appellee's Br. at 21-22.)
The term "guest" was not defined in the consent agreement. We agree with State Farm's contention that the term "guest" is an ambiguous description of a person's status with regard to premises liability. In Burrell v. Meads, 569 N.E.2d 637, 643 (Ind.1991), we described the position of the social visitor as "anomalous" and noted Professor Fleming James' description of the guest as "an invitee who is not an invitee."
*1233 In Burrell we discussed the traditional categories of visitors entitled to an "invitee" status: the public invitee and the business visitor.[3]Id. at 640-41. We added the social guest to this class. Id. at 643. Each of these categories is distinguished by whether it involves a public, business or social aspect. A description stating only that a person is an invitee, visitor or guest omits the relevant portion of the label, i.e., public, business or social. Consequently, the consent agreement's determination that T.B. was a "guest" does not preclude a finding that she was present in the home for a business activity, i.e., daycare.
Summary judgment for either party is unsustainable with regard to the childcare exclusion.
Vicki Dobson operated a daycare in her home for several years, and T.B.'s mother paid Vicki Dobson to care for her daughter over a period of years. Drawing all facts and reasonable inferences in favor of State Farm, it appears as though T.B. was in the Dobsons' home for the sole purpose of benefiting from childcare services. Accordingly, we reverse the trial court's grant of summary judgment for T.B. as to the childcare exclusion. The trial court should take evidence on this question and rule on the merits.
T.B. argues that even if State Farm raises the childcare exclusion as a defense, summary judgment is still appropriate because an exception to the exclusion applies. The Dobsons' policy provides that the childcare exclusion "does not apply to the occasional childcare services provided by any insured." (R. at 281.)
T.B. concedes that "Vicki did routinely provide childcare services to [T.B.] before and after school and during the summer...." (Appellant's Br. at 36.) She explains that Vicki did not usually care for her during the day, except on days that T.B. was sick. (R. at 464.) This was the circumstance on the day that Murl molested T.B. Based on these facts, T.B. argues that Vicki's care at that time was occasional. (Appellant's Br. at 36.) T.B. additionally states that she was not in Vicki's care at the time of the incident because Vicki left the home to attend to her mother-in-law across the street. (R. at 471.) She claims that she was actually left in Murl's care. She argues that his care was occasional because "Vicki, not Murl, was paid for caring for [T.B.]." (Appellant's Br. at 37; R. at 483.)
There is a genuine issue of material fact as to whether T.B.'s care was occasional, such that the occasional care exception to the child care exclusion would apply. Because summary judgment was inappropriate for this issue, we direct a trial on the merits for this question as well.

II. Damages Award
State Farm next argues that grant of summary judgment in favor of T.B. was improper because the trial court erroneously accepted an award greater than allowed by the Dobsons' homeowner's policy. The Court of Appeals held that the insurer's liability was limited to $300,000. State Farm Fire & Cas. Co., 728 N.E.2d at 919. We summarily affirm their decision on this point. Ind. Appellate Rule 58(A)(2).

Conclusion
We reverse the trial court's grant of summary judgment and remand for a *1234 hearing on the merits of the childcare exclusion and occasional care exception.
DICKSON, SULLIVAN, BOEHM, and RUCKER, JJ., concur.
NOTES
[1]  The consent agreement states that "on April 4, 1996, the Plaintiff [T.B.], a 10 year old minor, was present as a guest at the residence of Murl L. Dobson and Vicki L. Dobson." (R. at 81.)
[2]  As earlier mentioned, the consent agreement also stated that the malfeasance was unrelated to Vicki Dobson's daycare activities. Because we have determined that this statement was not necessary to resolve the liability claim, we will not again address the statement here.
[3]  The Restatement (Second) of Torts § 332 defines the public invitee as "a person who is invited to enter or remain on land as a member of the public for a purpose for which the land is held open to the public." The Restatement defines a business visitor as "a person who is invited to enter or remain on land for a purpose directly or indirectly connected with business dealings with the possessor of the land." Id.
