This research determined if preschool-age children could learn personal safety skills when taught by their parents. Following program participation, children as young as 3.5 years demonstrated greater knowledge about sexual abuse and higher levels of personal safety skills compared to controls who had not received the intervention; and these gains were maintained at the two-month follow-up. Parents did not report any increases in program-related negative behaviours. Also treatment children were not viewed as more fearful after program participation. These results suggest that parents can effectively teach their preschoolers personal safety skills, and that programs can be safely and effectively implemented at home.