I simply put the drawer completely inside a 13 gallon kitchen bag and slide it into the Litter-Robot bag and all.
Now, with the drawer completely enclosed in a bag, and the plastic bag sticking outside the robot to cover the lip of the drawer as well, there's no way for the urine to run down inside the drawer and collect. The cats scoop litter out of the robot onto the lip, thereby soaking up the urine so that it doesn't smell, at least not as badly.
When I change the bag, I simply pull the drawer, bag and all, set it INSIDE another trash bag, and pull the clean drawer out from inside its bag. I stick the drawer inside another bag, slid it into the robot, and I'm done.
I've not had to wash or sanitize the drawer for four months!
Michael
