Isabelle is fed Raw and still has really bad tear stains, but just on 1 eye. The staining started as we started raw but i think that will have just been a coincidence. Any ideas?What are your pooches eating? A lot of the time tear stains can be cleared up with a diet change. I have heard several people that have used Angel Eyes say it does work. But it is only for temporary use (as it's a mild antibiotic) & the stains will come back unless the allergen that is causing the staining is eliminated from their diets.
Most allergies are caused from grains so I'd start with finding a good quality grain free food if they're not on one already. (Taste of the Wild is a decent one) Good luck!