Overby Farm Tear Stain Supplement Soft Chews for Cats and Dogs, 65-Piece, 143 g

I give 2 chews a day for over 2 weeks and then gradually ease off to 2 chews every two days. The unsightly tear stains cleared as I continue to clean around my dog's eyes. I'm on my third bottle of this brand but I now feed every few days.

These might be effective if you manage to make your cat eat them. Mine doesn't like them. He would just smell them and leave. I tried putting one in his food and didn't refill until it was empty. He ate everything but the chew. He is a bit picky eater, but he likes treats in general. They are quite pricy so buying them is a gamble.

Seems to help with staining

Absolutely brilliant product! It reduced the tear stains in the first few days and almost completely removed them by the end of the first week. I did also notice that our cats fur became a lot more shiny and silky smooth.

I have 2 dogs that are susceptible to tear staining and have been giving them these chews for about a month. I have not noticed any reduction in staining and won't be buying again.

I’ve tried many products to reduce tear stains on my Maltese dogs. These chews work great. They do take a week or two before you start to notice a difference but once they start working you will see a dramatic reduction in tear stains

Waist of money completely.

Only good thing about this is that my Maltese likes the flavor. Doesn't do any better for his stains.