When a Dog Digs inside its ears is when the problems begin! Dirty ears will annoy enough to cause itching inside the ears. Yeast even more! Takes less than 30 seconds per week for great hygiene. When your dog comes in shaking its head from side to side DON'T WAIT, just rinse its ears out with Doggie Ear Wash. Be Pro-Active. Save your pup from this frustration. Should be used once a week as hygiene. Definitely use in conjunction with Doggie-N-Zymes and Doggie Anti Itch while getting rid of Yeast issues. (Buy the Value Pack Bundle)