Hartz Nature’s Shield Flea & Tick Dog Shampoo contains plant extracts with proven safe and effective protection against fleas, flea eggs and ticks by contact, while repelling mosquitoes for up to 24 hours (when used as directed). This flea & tick shampoo combines a unique blend of natural essential oils, cinnamon, citronella and rosemary, into an effective formulation, creating a strong yet gentle defense for a dog year-round. Each 14oz bottle of naturally scented shampoo helps to nourish a dog’s skin and coat with Vitamin E and Glycerin, while providing maximized botanical protection against pests at the same time. This flea & tick shampoo with plant-based ingredients is free of parabens, dyes, and alcohols. When used as directed, Hartz Nature’s Shield Flea & Tick shampoo for dogs is safe to use around children, pets, and homes and is also safe to use for routine pet baths.