My cat's flea treatment isn't working. Can I switch brands safely?

Question

Can I use advantage flea treatment one week after giving ectoline on my cats. I've tri d another cheaper brand in the last week also but nothing seems to be working. They became resistant to frontline a couple of years ago and ectoline was started one year ago effectively but now has stopped working too. Pet's info: Cat | Maine Coon | Male | neutered | 4 years and 7 months old

Rebecca, DVM · Accepted Answer

I would not use the Advantage so close to applying another treatment. Wait at least 3 weeks since previous treatment. It may still be killing the fleas on the cat, but if fleas are still in the environment, new ones are jumping onto the cats. I would recommend treating the environment to help get rid of fleas more effectively. It will take at least 4 months to get rid of fleas if you are treating ONLY the pets. Make sure all pets are treated as well. Here are some articles for more info. http://www.veterinarypartner.com/Content.plx?P=A

My cat's flea treatment isn't working. Can I switch brands safely?

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