Certain plants have developed highly effective defense mechanisms against potentially harmful insects and Sentry has harnessed the power of these natural botanical extracts to produce a line of flea, tick and mosquito control products that feature natural active ingredients such as peppermint oil, cinnamon oil, lemon grass oil and thyme oil. The exclusive formulations that feature these ingredients are harmless to mammals, birds and fish but they're deadly to biting pests. This means Sentry Natural Defense products are highly effective, yet they're safe for use around your pets and your family when used as directed. Squeeze On for Dogs Puppies kills fleas, ticks and mosquitoes for up to four weeks. Each carton contains three monthly applications that feature natural active ingredients such as peppermint oil, cinnamon oil, lemon grass oil and thyme oil. Do not use on pets less than 12 weeks of age. Active Ingredients Peppermint Oil 3% Cinnamon Oil 4.5% Lemon Grass Oil 4.5% Clove Oil 5% Thyme Oil 5% 2 Phenethyl Propionate 5% Other Ingredients vanillin, isopropyl myristate 73% Directions for Use Remove product tube from package. Holding tube with notched end pointing up and away from the face and body, cut or tear off the narrow end at the notches. While holding the animal with one hand use the other to apply the solution. Invert the tube, and use the narrow end to part the animal's hair while gently squeezing to apply to the animal's skin. Hold the animal for a few seconds to give the solution time to be absorbed into the animal's coat. When finished, wrap the tube in paper and put into the trash. Made in the USA.