Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Wonderful Product

I started using Edge for Dogs many, many years ago. I had a dog who was prone to hot spots. He would get them over and over.After I started him (and all other dogs I have owned) on this product, I have never, ever had a hot spot problem on him or any other dog.It solves skin issues, and brewers yeast is supposed to control fleas, so I don't use all the other flea products.I don't know why every dog owner doesn't use this!