[Magneticgal]

I am very concerned about the chemical "side effects" of flea meds. Lexie is on Advantage and acts very strange the first day I put it on her. She is fine the next day and acts normal. But the way she initially reacts has started me wondering about how healthy it is for them to have these chemicals in their system. I don't want to find out down the road that they cause cancer, or other harmful side effects. Perhaps I am just being paranod, but it seems like there has got to be another way to prevent fleas. Does anyone know of the side effects of these meds?