The veterinarian tested spot on treatment kills and repeals fleas, ticks and mosquitoes while using all natural ingredients, making it safe for use around children and pets. Each application last for up to 1 month. This all natural defense features natural active ingredients such as peppermint oil, cinnamon oil, lemon grass oil and thyme oil. Approved for puppies 12 weeks of age and older. For best results, use year round. 3 pack.