Frontline plus used to work 100% for fleas, not so much anymore, 80% at best. We have to reapply much sooner than recommended now. The fleas are becoming immune I guess, they need to find something different probably.
Frontline Plus Red provides your dog with the most complete spoton flea and tick protection available. In addition to killing 98100 of adult fleas on your dog within 24 hours, Frontline Plus contains a special ingredient that kills flea eggs and larvae, too, and keeps all stages of fleas from developing.By effectively stopping the development of new fleas, Frontline Plus completely breaks the flea life cycle. And, Frontline Plus kills all stages of 4 major ticks including those that may transmit Lyme Disease and Rocky Mountain Spotted Fever. It's completely waterproof. Effective Flea Tick Control . . . No Prescription RequiredGuaranteed US EPA approved. OverTheCounter topical kills fleas ticks in under 48 hours Protect against Lyme Disease Easy to apply monthly preventive Contains (S)methoprene, effective for halting immature stages of fleas