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Bald spot from Frontline?

My cat is 7 and has been on Frontline for about 4 years. We discontinue it in the winter. We occasionally get minor fleas and she is the first one I notice the fleas on.Other than the bad infestation we got one time, I can tell when fleas are on her because their waste makes her fur feel gross and her ears get red. She is all white and has short but super duper thick fur. She lives indoors 100% of the time. I have 2 dogs on Frontline as well, also discontinued in the winter. I'm sure the fleas were on the pets before I realized and the frontline stopped an infestation..it's a great product. The question here is, has anybody else had this happen and can the product be used in the future? I applied the medicine about 2 wks ago, and the spot is completely bald and she doesn't want me to touch it, but it isn't red, crusty, or anything...just bald

Public Comments

1. You actually need to report this to the company. It's a pesticide and is regulated by the EPA and they need to keep track of this kind of stuff. Could you have maybe put the wrong formula on? I suggest you call the company.
2. I have been a tech for 12 years, and I have never seen this. I use this on my own dogs also. Anything is possible, though. I would try applying it in a different spot next time, and see if the same thing happens. Also, if the spot gets bigger, is not going away soon, or starts looking infected, let your vet check it out. If you determine your dog is sensitive to the Frontline, try a new product out called Vectra. It is supposed to be so safe that animal dermatologists are recommending it.