Keep your pet free of fleas and ticks with the Oster Flea & Tick Shampoo with Oatmeal. Containing pyrethrins derived naturally from chrysanthemum flowers, this formula effectively kills fleas and ticks during all stages of their lifecycle. The dog and cat shampoo features 100 percent natural oatmeal extract to soothe and protect your pet’s skin. Plus, the calming Fresh Breeze fragrance lasts longer than those of other leading pet shampoos. Made in the USA, this oatmeal flea and tick shampoo contains pH-balanced and biodegradable ingredients and is free of alcohol, dyes, phosphates, parabens, and artificial colors.