So I bought some Hartz Ultraguard OneSpot treatment here in Canada, applied it to our cats, then noticed one of our cats licking the solution on their fur and freaking out. Naturally, I went to the internet and typed in the brand name to see if there were problems and almost had a heart attack when I found this site. After calling our vet and the number on the box, I was relieved to hear that pyrethroid products are not even allowed here in Canada. This site caused me to have an unnecessary panic attack thinking my babies were going to die or have neurological disorders. Please put a disclaimer somewhere stating that this kind of thing is only a problem in the good ol’ US of A.