Advantage Flea Control for Dogs

Advantage Flea Control for Dogs contains 9.1% Imidacloprid. Kills 98-100% of the fleas within 12 hrs and prevents reinfestation for up to 4 weeks. Kills fleas before they lay eggs. Each pkg has 4 tubes...a 4 month supply of flea control. For dogs and puppies over 7 weeks of age.