Great concept, but...
I've been looking for a mat for ages that captures the bits. This is a great concept, however, I use Catsan and some of the bigger particles don't fall through the holes (which I thought was the idea?). I wouldn't advise purchasing if you use pellets. If anyone can advise on a finer cat litter, give me a shout. Early days yet. A great price though compared to some other sites!