I'm going to put him on the new food for longer to see. overall he is getting batter, rashes are gone, when I notice his irratic scratching I would check under his fur and sure enough it would be a small bump. dab some steroid cream on and its gone the next day.
I did had a gruesome discovery. Few days ago I caught his scratching his butt again. This is like a half year habit and I though nothing of it til this whole rash/allergy thing. under a very detail examination of his tail, I find the same rash and bumps the base of the tail near his asshole and it is so bad that he chew through the skin there and is leaking pus/blood/poo looking liquid
I immediately trim the hair around that spot, clean and apply the same cream. It is getting better now he no longer itch there. After doing some research online symptoms seems to fit a flea allergy. I think (well I hope) I've nail the root of the problem.
He does get the advantage flea treatment every few month and we did not find any fleas on him or on us. but non the less I want to try everything.
Is there any good product that i can spray around the house to kill grown fleas and their eggs?