I decided to order this UGODOG dog litter/potty product after I got tired of having to let my puppy out to go to the bathroom and having to clean up the poo he left periodically all over the backyard. I like UGODOG cause the dog can go pee or poo in the crate and not make a mess everywhere cause it passes through the grates into the tray. You simply just change the pads underneath and wipe anything off the top of the grate. You dont even need the pads, you can even just empty it into your toilet.
The only thing I needed to do was train my dog to use it. If your dog is older he may not be able to be trained for it but if you got a puppy like me he eventually learned to use it. I would imagine UGODOG is even more important product for someone who lives in an apartment or condo with not much or any backyard. You can order UGODOG at their official site