Beware of flea treatments. I had a horrible experience. I tried a different brand on my little dog and he had a terrible reaction. About 4 hours after putting it on him, he woke me up with non-stop barking, pacing, panting, etc. He was barking at the walls, the door, etc. I believe he was hallucinating. It was pitiful. I called the Hotline number on the package and was advised to give him a bath with Dawn dish liquid and also was advised the same and also not to use their product again. No kidding. Finally tonight after 4 baths he has calmed down and is finally sleeping. There is no accountability with the manufacturers of these products. Here is a site with 100's of horror stories.
http://www.elversonpuzzle.com/biospotlettersv16.html
http://www.elversonpuzzle.com/biospotlettersv16.html