The Hartz Nature's Shield Natural Flea & Tick Dog Shampoo features natural oils to help protect your furbaby against pesky pests. This shampoo contains plant-based ingredients like cinnamon, citronella and rosemary oils to kill fleas, ticks and flea eggs on contact. It also repels mosquitoes for up to 24 hours when used as directed. Vitamin E and glycerin help to clean and nourish your best friend’s skin and coat. This shampoo is free of bad stuff like parabens, dyes and alcohols. When used as directed, it’s safe for use around your children, pets and homes, and it’s also safe for routine pet baths for year-round pest protection.