Puppy Training Litter Box

At first I was a little confused when I heard about puppy litter boxes, but once I found out more about them, I realized what at great idea they are. There are basically three types: the boxes with fake grass in them, for training your puppy to get used to grass, the types that use litter (you must use litter that is made especially for dogs), and the ones that use pads, to absorb the urine.
Puppy Training Litter Box:

Puppy Training Litter Box pictured: RASCAL DOG LITTER BOX “BIG SQUIRT” WITH GRASS 24 by 24 by 9 by Rascal Dog Litter Box Company BIG SQUIRT