I like the clumping of Cats Best, but if Zi uses the tray after I have swept/hoovering (I sweep the carpet at least twice a day to limit hoovering), it looks like I haven't bothered in days, and not only does she get it on the landing, but I also find it in the bathroom and bedroom - doesn't help that she can sometimes dig that vigourously it ends up embedded in her fur!! I swapped to some lightweight stuff this week, as the rescue kindly gave me some cos Ellie is using the girls tray, and there is hardly any tracking. Just dont like the odour control and having to empty the tray more often.
I used to use Sophisticat clumping, I might give it a go at weekend, even though it is really heavy - that is a clay clumping. Not good for large male cats who do really big wees though.