The process is pretty simple, just cut the tray, cut the litter container and then glue the pieces in. You can see the entire process in this useful tutorial video that happens to feature a fantastic soundtrack: http://www.youtube.com/watch?&v=jp7N90-Q2d4 Of course, those with pets known to over-indulge should stick with their regularly-scheduled, well-portioned meals lest you not end up with an empty bucket and a very bloated pet. Source – The Consumerist
