Small breeds and dogs weighing around thirty lbs . can successfully use this indoor Doggy potty solution. The concept is very similar in between the two indoor potty systems and dog's paws continue to be dry and clean following making use of either a UGODOG or Klean Paws indoor toilets. https://trusteddogshoponline81357.ltfblog.com/36326776/facts-about-indoor-dog-toilet-guide-revealed