Ovitrol Plus Flea Tick Shampoo for Dogs Cats is a soothing, oatmealenriched 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 babypowder 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 12ounce container.