South Dakota Codified Laws
Chapter 02 - Contracts Of Minors
Section 26-2-4 - Power of disaffirmance not applicable to necessaries.

26-2-4. Power of disaffirmance not applicable to necessaries.
A minor cannot disaffirm a contract, otherwise valid, to pay the reasonable value of things necessary for his support, or that of his family, entered into by him if not under the care of a parent or guardian or conservator able to provide for him or them.

Source: SDC 1939, §43.0106; SL 1993, ch 213, §116.