A PROGRAM TO TEACH POISON PREVENTION TO PRESCHOOL CHILDREN IN DAY CARE CENTERS WAS DESIGNED TO TEACH THREE BASIC CONCEPTS: where poison is, what poison is, and how to avoid poison. A series of ten slide-cassette presentations and numerous teaching aids were developed for use by the day care center instructor to the children. Over 3,000 children were enrolled in the program. Evaluation shows that poison prevention education can be demonstrated in children less than five years of age. (Am J Public Health 1981;71:750-752.)