ADVANCED STRENGTH - 2X flea killing effectiveness. Kills fleas, flea larva, flea eggs, and ticks by contact and cleans and deodorizes your dog’s coat. SAFE & EFFECTIVE - Each active essential oil is natural for a safe and effective solution you can trust. SAFE TO USE FOR DOGS - Formulated for dogs 12 weeks or older when used as directed. MADE IN THE USA - Our products are proudly manufactured in the USA with quality domestic and internationally sourced ingredients.