I have my cat on a monthly dose of preventative Revolution Plus but I've found that after I apply it, he always scratches and licks a lot of it off even though I put it on the back of his neck.
Is it still effective if he's licking it off and is there any harm from him swallowing some of it?
Is it still effective if he's licking it off and is there any harm from him swallowing some of it?