Instruct: Classify Amazon reviews into positive or negative sentiment
Query: wow! what a difference!

We adopted our dog from a shelter, and he had the red tearing around his eyes. The vet recommended wiping his eyes twice a day with a warm, moist cotton ball, but the staining persisted. A few other dog owners recommended Angels' Eyes to help with the staining. Within a few days of using the product, the staining was gone! We thought it would take a few weeks, but it was so quick! I mix a tiny amount of Angels' Eyes with some wet dog food and add it to his dinner meal. I highly recommend this product!