works well on dirty pawsif it fits [SEP] these types of paw washing cups are an excellent way to clean muddy paws i m so glad the days of lugging a bucket of water are behind me i ve tried a couple different versions and found this one to be good if it fits your dog s pawsi have a golden retriever the box i received said medium and it works for her though it s a little tight there are a lot of silicone bristles inside and while that s good for cleaning if you re on the borderline of it fitting your dog too many bristles make it difficult to get your dog s paws in and out and to agitate the cup enough to clean i didn t see a size noted when i ordered so i m not quite sure if it s possible to order different sizes since i don t see that info on the amazon page just on the box i receivedcleaning the cup is easy just rinse if the water isn t too dirty or unscrew the top and remove the silicone bristle insert for a deeper cleanthe included towel is nice and fluffy but only the size of a standard washcloth my dogs feet come out pretty wet so the cloth is soaked by the time i m done wiping her feet i use a towel instead