For dogs 61 lb and over. 12 Week supply. Controls reinfestation for up to 9 weeks. Caring for pets since 1868. Kills: Fleas in as little as 1 hour; Ticks in as little as 3 hours; Mosquitoes; Flea eggs; Flea larvae. Apply once every 4 weeks. Sergeant's Gold Flea & Tick Squeeze-On for Dogs is an effective and easy to use product. As with all flea and tick control products, Sergeant's Gold Flea & Tick Squeeze-On for Dogs should be used as part of a program aimed at reducing flea populations in the dog's environment (bedding, carpets, kennel, yard). Made in the USA.