So I have had such bad luck with Sulley and his food.  His wrinkles are extremely discolored -a rust color.  My vet suggested I make his food for a while.  So he is now eating beef and some vegetables.  His stools have gotten so much better, but his wrinkles are still discolored.  I clean them and have tried cornstarch/peroxide, but the stain won't go away.  How long do you think it will take?
				
			
 