. Detergents, petroleum products, and pesticides each contributed about 10% of all poisonings with detergents peaking during the second year of life, petroleum products during the third year, and pesticides remaining constant, in proportional terms, throughout childhood. During the working hours of the day the incidence of poisonings was 80% higher than during the late afternoon and evening hours or the weekends, the times when both parents are usually at home; the excess was statistically significant