Odor Showdown: Concentrate vs. K.O.E. – Tested For Cages, Fresh Scent… We’ve tested our fair share of odor eliminators, but the Thornell Odor Eliminator Concentrate – K.O.E. stands out for its power and precision. Designed to tackle strong odors in cages, runs, and even Kennels, our results were impressive. The Safe, Non-Enzymatic Formula works without harsh chemicals, making it a worry-free choice for our pets. Best of all, it comes in a Fresh Scent that genuinely masks pet smells without overpowering our home. The 16 oz bottle offers great value for frequent use, and we appreciate its concentrated strength—no mixing required. While nothing eliminates odor instantly, this formula neutralizes even the toughest smells over time. For pet owners seeking a reliable, non-toxic solution, we consider this a top contender.