Effective on Frontline resistant fleas...kills fleas in less than 60 minutes & lasts 30 days
(AgriLabs) TriForce Feline provides quick-acting, long-lasting, squeeze-on protection to kill adult fleas and prevent flea eggs from developing into biting adults. Kills deer and black-legged ticks before they can transmit Lyme disease, and repels mosquitoes that transmit heartworm disease for up to 30 days. Do not use on kittens less than 12 weeks of age. Apply once every 30 days. Contains Etofenprox and Nylar.