Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It works. I only need to tend to it once a week.

This product works. I use Fresh Step litter with it, filling it just below the normal fill line in the pan. The liners are available in Wal-Mart.I'd give it five stars but I'm on my second LM900. The first one broke after a year and a half. I honestly don't mind because $120 (+liners) is a fair price to pay for not having to constantly scrape up cat poop for a year and a half.Other folks have had success fixing theirs when they break and only using two liners ever, so you could theoretically drive down your costs even lower.DO NOT BUY the next model up, the "Advanced Mega Elite Ultra" or whatever they're calling it. It doesn't work half as good as this one does, and it costs $20-50 more.