We have used FON for many years, in a multi-cat household. It absolutely gets rid of feline urine odors, leaving litter boxes free of odor, with no tell-tale perfume or masking scent. Our very large, Maine Coon cat is not always "accurate" at the litter box, but FON takes care of his accidents completely. I'm so pleased that you sell this wonderful product, as it is nearly impossible to find in local pet supply stores. Your customer service is fast!