Zymox OTIC with Hydrocortisone 1.0 Ear Solution Treatment Bacterial, Viral, and Yeast infections for Dogs and Cats For treating inflammation of the external ear caused by bacterial, viral, and yeast infections It contains no antibiotics, and acts as a cleanser and a medication in a daily dose. It has no memory, so it destroys microorganisms resistant to antibiotics. Zymox Otic is an effective, powerful, antimicrobial ear solution containing only natural bio-active enzymes and is safe for extended, preventitive use for chronic otitis externa. Just apply liberally in the dirty ear to fill the canal. Gently massage and work into the infected area. Wipe to remove excess. Treat once a day for 7 days or 14 days for chronic cases. Flush the ear after treatment. Do not use in conjunction with other topical ear medications or cleaners. Easy to ues.