I have 15 of the wonderful little fur "brats." I have next to no odor other than the wonderful warm scent they have. I do use the Marshall's Bi-Odor and have for several years now and I do think it really helps. I also use rabbit pellets for litter. For many reasons: Such as, Safe for my ferrets who like to play in it when it is changed, biodegradeable ( I rototill in into my garden) smells clean and absorbes the wet very well and is easy to clean, also Dogs clean the floor,LOL. Besides I like the alfalfa odor it has. Hope this helps a bit. Terry and the Fabulous Frolicking Fur Gang [Posted in FML issue 4341]