Apparently Comfortis is no longer working on my Shih Tzu. It's working great on my Lab though! So, I put some Revolution from the vet onto Vida, the Shih Tzu and onto the kitten. This was yesterday about 4PM. Vida is still itching like a maniac (after a bath with Dawn...) and Mira, the kitten, after her bath still has fleas crawling all over her, INCLUDING directly on the site where I applied the Revolution.
Does this stuff not work? How long does it take to come into effect?
Does this stuff not work? How long does it take to come into effect?