An English cocker spaniel. K. Coneon says of EcoEars: "My cocker spaniel has had ongoing ear infections and an overgrowth of smelly yeast in his ears for years. We have taken him to the vet and tried so many prescriptions, to no avail... After seeing the 5 star rating and the # of positive reviews I thought I HAD to try it. ... his ears are spotless! No more brown yeast comes out when I clean his ears. He seems a lot happier too! ...I am so glad I ordered this product. It really works."