I use a simple little trick to stop my 2 ferrets from flipping the litter
box over.  at most auto stores you can get little bungee cords that are
about 6" long and about 1/8" thick.  They usualy come in packs of six to a
dozen ranging in price of $.99 to $1.99.  I have a corner mounted litterbox
and clip one end of a bungee cord to the edge of the littlebox and stretch
it under the corner of the cage and clip it to the opposite edge of the
litterbox.  I have all all wire cage though.  I kinda doubt this would work
for those real fancy cages that have the large plastic tub for a bottom.
Good Luck to ya.
 
Laters, Danny Ling
[Posted in FML issue 3029]