【Puppy Potty Trainer】:The dog litter box is 3-layer design.The top is artificial soft grass,which can effectively attract dogs.The middle is reusable pee pad to absorb urine permeated from the grass mat and control odor.The bottom is base tray to collect urine to protect your carpet and floor. It is good puppies potty training tool for new dog owners. 【Extreme Weather Potty Solutions】:The indoor dog potties tray is an excellent solution when it’s too rainy or snowy or hot to go out for a walk with your doggy,or when you don’t want to go outside in the middle of the night.This is also a life saver for senior dog or disabled dog after surgery. 【Unique Hemming Grass Mat】: Stitched border around the edge + tighter weave + TPR bottom to effectively avoid the problems of dog pee grass shedding off.The faux grass has multiple drainage holes that can drain to pee pad underneath.And the potty grass material is soft under your pup’s paws.If your pup likes to go on grass to pee and poop on, this is a good substitute for them to use.