I had one a while back. But I finally gave up on the unit after about 6 months. For one thing, it's pretty big (especially if you put the little ramp on.) It was hard finding a good spot for it. I never used batteries so I always had to find someplace near an AC outlet. Another problem I had was the motor wasn't powerful enough to scoop the litter all the way into the bin. So it would go forward, lock up, go back, go forward, lock up, go back, etc. until about 10 times and then it just stops. And my stupid cat never got the fact that he no longer had to bury his turds. He'd sit there scooping litter on top of it which made for two problems. First was the locking up problem I mentioned earlier (too much sand in one spot.) Second, the litter would get flung out of the pan and would make a mess. The tent might be a good solution but when I priced it at Petsmart it was like $40. So all in all, I wasn't too thrilled with the whole thing and it went into the garbage and I went back to the old fashion litter box. If that becomes too much of a problem then I guess it's time for ol Dusty to become an outside cat...