Hi, sorry for the late late reply. Unfortunately, i did not notice i had a message in my in box all this time. I hope you have resolved your problem with your bully's tear stain and got him on some good food. For me, i feed my boy Avoderm but it was until i started to add apple cider to his food that i really noticed an improvement regarding the tear stains. Previously, i would always wipe him and clean him as good as i could but his tear stains showed real sign of improvement until the apple cider. I think i am fortunate that my boy eats anything so the taste of a cap full of apple cider once a day added to his food did not stop him eating.