I bought the Rascal Dog Litter Box... the Big Squirt...
I did not buy the grass and I took the grate out and just use
peepee pads.
Rascal Dog Litter Box Purchase Now Page
The 30 x 30 peepee pads from YT Member, Ryan, "new puppy pads" fit it perfectly!!
Quilted Puppy Pads - Puppy Training Pads - Puppy Pee Pads - Dog Pee Pads - Pet Training Pads - Cheap Puppy Pads
I also bought, or actually my parents brought me, a Diaper Genie
for the used pads so there is No Smell in my place!!
Playtex - Diaper Genie Elite Advanced Diaper Disposal System ? Walmart.com