All Terrain Pet Herbal Armor is a highly-effective, safe, natural, DEET-Free insect repellent that uses six natural-repelling oils at 25% total concentration. A patented time-released encapsulation has been clinically proven to be 100% effective for two hours and 95.8% for three hours. Pet Herbal Armor is non-irritating, allergy tested, and safe for sensitive skin. Made for active pets, Herbal Armor is sweat and water-resistant. Meets strict standards for natural ingredients.