We live on the lake and have goldendoodles that swim everyday. We rinse their ears with this every time they get out for the final time that day and haven't had any ear infections since we started using it. Just remember to massage it into the base of the ear until you hear it squishing around, that helps it rinse out wax. We are happy to find the large container because we go through so much of it. The individual bottles are pricy.This is the best natural ear cleaner/flush I have used, and I used alot of brands. It smells nice and works wonders.Tea tree oil is toxic to cats. Don't use this on a cat, don't even use it on a dog that lays with the cat! This company seems to think that they can automatically market all their dog products to cats. Much like their CHERRY flavored anti-diarrhea medicine, this is not appropriate for cats! You can't just take a dog product and market it to be safe and effective for cats. This is not only morally wrong, but it's unsafe.