HOW IT Order Select the gty needed of Gotta Go Grass size best suited to your dog, decide upon a schedule for receiving replacements, and have it delivered directly to your door. Don’t forget a tray if you don’t have one. It’s that easy. Open When the package arrives at your door just open the box, set the grass and tray in a suitable location, if applicable lock your trays together and you're done! Go! Introduce your furry friend to the best way do his business without taking a walk in the park.