“Revolution stopped working after too many warm winters in Atlanta failed to kill off fleas, and I would see fleas 1-2 weeks after application. Though this has the startling side effect of making one of my cats foam at the mouth, it's temporary and according to veterinary ER and my vet, not harmful. My cat has a bad flea allergy and even one bite can cause his skin to be scabby and itchy--this has helped!”
