PennPlax puts zeolite in bags for use in hamster/small animal litter. I
have used it for a long time with my hamster and have been pleased by
its effect. I wouldn't know how much to use with Casper's litter but
will try it and let you know if there is any effect. If he stops using
his box ( and he only uses dust free clay litter) then I will announce
it to the whole world.
                 Gail and the ZOO
[Posted in FML issue 0964]