Medium-The medium Paw Cleaner is perfectly sized for medium sized dogs like Bulldog, German ShepHerd,Golden Retriewer, Husky, Labrador Easy to clean - the internal part could be separated and just water flushing could make that clean The gentle silicone bristles on the bottle help loosen dirt and mud from your dog\'s paws. Keep them mess outside- not in your car or home! A gentle and effective foot washing cup. Remove dirt from your paws before touching furniture or carpets To use, add a little water and hand sanitizer, insert the muddy paw, dab the paw dry?repeat for 3 more paws Simple and easy to use, just rinse and keep on hand for next muddy encounter. BPA free