Our XL DoggieLawn grass (tray not included) is ideal for larger dogs, multiple dogs, or dogs who want more room to roam around. The indoor grass for dogs is 48 x 24 inches and is hydroponically grown from a farm in California. The potty grass for large dogs ships from California and is a one time purchase only. For recurring deliveries, go to "Pick Your Plan" and choose your frequency. For those located on the east coast choose our locally sourced dog grass mats. The tray is not included. We recommend purchasing our XL DoggieLawn tray with this item.