Ovitrol Plus Flea & Tick Shampoo for Dogs & Cats is a soothing, oatmeal-enriched insecticidal shampoo that offers immediate and residual control.Oatmeal, coconut extract, lanolin and aloe soothe sensitive skin and leave coats soft, shiny and manageable. Refreshing baby-powder scent. Precor? IGR prevents flea eggs and flea larvae from becoming adult fleas for 28 days. Kills adult fleas, ticks and lice. Available in a 12-ounce container.