Zani didn't have any tear staining problems when we brought him home at 12 weeks. However, when we got him home they gradually started. We feed him the same food as his breeder and so when the staining started I wasn't sure why. Well, our entire home has hardwoods, some tile, and limestone flooring. We have two runners and one small to medium size area rug and Zani loves to potty on them instead of his pee pee pads. I was becoming so frustrated and decided to remove all the rugs. GUESS WHAT!!! Within a matter of days the tearing stopped and he has a beautiful white face. I'm so excited!