I was told to put Kitty Litter in my new speaker stands. Was he joking?

My Totem Arros have mass loading chambers.  I used rice.  Figured that in the event of Zombie Apocalypse I could break open the stash. 

The retro looking stands that I use for my JBL 4319s use some kind of injectable sound deadening foam. When I first got them, I tried rapping on different spots/locations and got different, thought deadened, responses. Seems to work well enough.

All the best,
Nonoise

How about Granny's cremation remains?
I told my wife to do anything she wanted with my ashes, just not in the kitty litter. 

Just a follow up in case someone else has the same question. 
I used non clumping clay based unscented kitty litter. I filled both Pangea DS400 stands with two 15 pound bags. The stands were heavy before filling and now they are like statues. It worked out great, sounds clean and tight. 

@fredcdobbs,

only if granny was grossly obese