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

I am still waiting for the stands to arrive. But it seems logical that since enough of you have used KL successfully and it was recommended by the speaker designer - ill use it also. Yes it absorbs humidity, but thats its function, and wont matter unless i try to remove it ( cant imagine why i would do that). I bought my old stands used, over 20 yrs ago and have no idea what the original owner put in them. I should check.

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.