TropiClean Natural Flea and Tick Shampoo Plus Soothing Dog Shampoo 1gal TropiClean Flea & Tick Shampoo Plus Soothing kills fleas, ticks and mosquitoes by contact, while cocoa helps to soothe irritated skin. This natural essential blend contains nature's most powerful pest fighting ingredients, maximized with lemongrass and sesame oil, for long lasting effects. Our natural formula is safe enough for routine pet baths.