We travel frequently and needed something that was automatic to keep my kitty peeing and pooping in the right places while we are away. I love the concept of this thing, but would love it sooo much more if it WORKED! Each time we spent almost $100 to invest in these and they broke within 18 months! Beyond repair! The first time, I figured I just got a dud, but after the second time so we just used it like a regular cat pain until I was sick of it taking up so much space. I am really disappointed with the product. It seems that it's just not reliable enough for the cost.