I like it but.....
I have actually used this for a long time, and it is really effective and good. However, in the last 6 months it seems to be getting dustier and dustier and I find that furnishings near to the tray get coated in white dust. It cant be good for the cats or me to breathe that in so I have sadly stopped using it - if they could sort the dust I would use it again but the level of dust is just too extreme for me.