I like using Biokleen’s Bac-Out enzymatic stain and odor remover between complete cleanings. My girls, Luna and Lucy, tend to pee on the edges in their litter box. So, in spite of how often I scoop the pan, there will be a Awful ammonia odor. Photograph by Sam Lion: On https://catlitteruae31087.blogdemls.com/36910888/a-review-of-odor-control-cat