I returned the Littermaid today. Cody & Midnight were using it, but Cody still pooped on the floor a few times. The littermaid was disgusting. It was impossible to keep clean, and when it scooped, it tossed more litter on the floor than the cats do. Emptying the container was messy & disgusting. Thankfully, Target took it back and gave a full refund.
I was able to solve the poop problem by getting the biggest litterbox I could find and putting it on the bare floor. It seems that Cody likes to poop on carpet, but not on bare floor. He & Midnight are both using the box now.