We use it I put in a teaspoon of apple cider vinegar in my Yorkie's water... found the idea when trying to figure out how to decrease the eye stains... It's made a bit of difference along with using Royale Cain dog food and filtered water. (didn't start out with that much vinegar... added a couple of drops every other day or slowly increasing it until he got used to it.)
Last edited by JWisewoman64; 10-17-2014 at 06:29 PM.
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