I called a veterinarian clinic in the county over from mine that does procedures that our local vets won’t do. I called to see if they would flush out Jeep’s right tear duct. They said I could bring him in for an exam but they would need to refer me to an ophthalmologist veterinarian in Nashville. That’s two hours away. I’m going to continue to try other options first. I found an article on here with a blog from a veterinarian about tear staining. “A Veterinary Guide to Tear Stains.” He suggested liquid Vitamin C or contact cleaner as a topical cleaner. Has anyone tried these before? If so, which one? What is your opinion? I read reviews on several products that goes through the digestive system. Some are powder, chews (NaturVet) and liquids (Animal Essentials Seasonal Allergies.) already suggested. And Eye Envy which is a topical 3 step process and a little pricey. Any thoughts on these products?