What kind of shampoo are you using for fleas - if it's something cheap and store bought this could be irritating his skin and also - if it's hartz or one of those products - they can be very toxic to small animals - there's alot of info on products if you google them - I'd type in what you're using and read what others have said about that particular product since you didn't mention it
it's just a thought and something you can rule out or in should you decide to research the product |