Rebecca Coleman was asking about using wood pellets for the litterbox.  We
put a SMALL amount of clumping (scoopable) cat litter in the bottom of the
box and then put a nice thick layer of processed corn-cob ($2 for 10.1
liters).  We've been doing this now for two-and-a-half weeks with very good
results - no clumps of litter in the nose or butt and very easy to scoop
after each use.
 
Hope it helps!
Susan
[Posted in FML issue 1668]