ZYMOX Plus OTIC-HC 1.25 fl. oz Hydrocortisone 1.0% Dog Cat Ear Otitis Treatment Biofilm Reducing Formula Works on Resistant Microbes Quicker and More Effectively. Features increased potency of the patented LP3 Enzyme System PLUS four additional biofilm-reducing enzymes formulated to destroy the hard-to-penetrate biofilm slime layer that protects and hides microbes. Engineered to aid in the management of the toughest chronic otitis externa cases - those due to resistant organisms, such as pseudomonas or even MRSA which form complex biofilm. Ideal for those cases of repeated infection or the infection that just won't resolve. Same broad spectrum antibacterial, antifungal properties PLUS biofilm reduction.