We must agree with Joy, it's nothing but wood pellets for us!  Never had a
problem with our 7 not wanting to use them, well besides the usual "I could
climb into the litter box, but it's so much easier to go next to it!" Clean
up is easy, and odor is low!
 
Tysa, Dana, and the Havoc Wreaking Weasies
[Posted in FML issue 3071]