Bio-Eyes Tear Stain Remover is a remedy made to remove stains that form due to tear flows around your cat’s and your dog’s eyes. Usage: Using special drops of the product, place a small amount of Bio PetActive Bio-Eyes Tear Remover on a cotton swab or gauze and gently wipe stained, dirty areas around the eyes. A separate cotton should be used for cleaning around each eye area. Make sure the product does not contact with the eye during cleaning. After application, dry the applied area with a clean gauze or cotton. Application should be done 3 times a day for 1 week. Afterward, it should be used regularly once or twice a week to prevent stain formation. The application should be terminated if deemed irritation. Consult a veterinary in case of serious situations