I have a white Shih Tzu named Teddy and under his eyes are always stained. The only time they disappear is when he is groomed and the discoloration is cut. I have been using Omega Pets Tear stain remover every day and his eyes within a week there is a big difference. I take a soft cloth and put a little remover on it and gently wipe under his eyes. I even do his paws because he is always grooming himself and his saliva makes his paws turn slightly brown. His paws also are starting to get lighter!! What a great product. I love the fact that Happy Eyes is a US made, cruelty-free, fragrance free, palm and coconut oil based solution. It is very gentle on his eyes. I will continue to use everyday so my Teddy has no stains under his eyes and paws