We love the litter robot. We just wished it had a bigger (deeper) waste container. If we forget to empty it after just a day, or if we forget to "shake" it forward to make more room, we get a nasty gunky surprise when we pull out the waste drawer.
Enter my husband, who loves any project that gets him in the woodshop. (He's also the one who empties the drawer most of the time!) Together, we decided that we needed a bigger waste bin.
In my mind, I had pictured a tiny drawer--just tall enough so the poop would fall forward (and not stack) and just wide enough for the robot to sit on, plus a little stoop that the kids could jump on before stepping on the trigger step. Well, I must not have good spatial ability, because I told this to my husband...and the box he built is HUGE! But, it's the exact size it needs to be. (Or maybe I just think the robot is smaller than it actually is.) It now sticks out of the closet so we can't shut the door. (Not like we would have shut the cats out of the litterbox, but it's just the fact that size-wise we could still shut the door.)
Basically, it's a huge wooden drawer (maybe 2' wide x 3' deep). The LR sits at the back end, so there will be about an 8" ledge for them to hop on before hopping into the LR. It's about a foot high. The drawer will house a rubbermaid-type container that will fit a large kitchen garbage bag (just hanging over the sides like a regular kitchen garbage; no clips to hold it in place). There is no slanted board (as I had initially imagined)...so basically, it's just another 12" for the poop to fall and collect, rather than the 4" of the originial drawer. So, when it's time to empty, we pull out the large wood drawer (which includes the rubbermaid container), pull out the bag, rebag, and push the drawer back in. Also, since the drawer is so deep, there's room to store extra bags/litter/etc. in the drawer. Oh, and it's carpeted (we had leftover carpet from the scratching post he made).
We did, of course, have to cut a hole in the original waste drawer (and by we, I mean my husband!) AND in the bottom of the robot itself (so the waste can totally pass through). We had originally thought to just take the drawer out entirely (so we wouldn't have to cut it), but if you lose the drawer, you lose the switch that triggers the robot!
We did test it first (before all the cutting) to make sure the cats would hop up and use it...which they did with no problem. Of course, they have already explored the entire drawer and the newly heightened robot.
So, without further ado, here are the pictures.
http://www.hudson2001.com/tom/projects/litterrobot/
If anyone has any questions, feel free to post them and I'll get my husband to answer them.

