The boys have always used chick crumb and whilst it is very economical, clumps well, lasts ages, no smell etc I've had enough of the tracking and the dust! I was convinced to try Oko plus cats best, it tracks probably about the same as crumb but as the particles are bigger it's easier to sweep up, it also seems to be a lot less dusty than crumb.
I just popped into Jollyes to get another bag to change the chick crumb tray over, as I only did one tray of Oko Plus, and they had quiet a few different types and was wondering whether anyone has tried any of them. They were all quite abit cheaper than Oko plus which at £6.79 for a 10L bag or £24.99 for a 40L bag is much more expensive than crumb at £10 for a 20kg sack.
Pettex clean paws - £9.78 for a large 15kg sack (prob equivalent in size to the 40L Oko plus)
Catsan Natural wood - couldn't work out if this was clumping or not, didn't look like wood pellets. 10L £5.49
Bio Catolet - large 25L sack £8.99 - not sure if this is clumping either?
If no-one has anything good to say about the above then I'll probably go with Oko Plus but would be nice to find a cheaper alternative!