I noticed a flea on my Jackie-Boy, so I got some Seargent’s Silver Flea Control. I was nervous about putting OTC flea medication on him, but I knew that I couldn’t take him to the vet for another month or so. Well, it was the worst mistake I could have made. I applied the medication. Immediately afterwards, Jack was shaking and scratching himself. I had hoped that it was because it stung a little. The next morning, there was a large red mark on him where the medication had been applied. As the day grew on, the mark got worse, and he began losing his hair in that area. The spot is now the size of a silver dollar, and I will be taking him to the vet this week. I could not believe that this had happened. I feel like the worst mother in the world and I hurt my poor baby. I was it off twice a day now and apply Bacitracin to it. Hopefully that will do until I get to see our vet. I wish that I could have found this warning site sooner, but hopefully it will help someone else before there is an accident.