Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A must for white dogs!

Having two Westies, I was always cleaning their eyes and not doing a very good job of it. I heard about Angel Eyes and tried it. They love it too. However, I recently tried the sweet potato flavor and it does not seem to work as well as the other flavors. Overall, their eyes are stain free and other hair on their bodies like the middle of their back and around the mouth are much whiter than before. I will always be an Angel Eyes customer.