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

Glass beads also available as well, if you feel you've got enough plastic, lead, sand, or kitty litter in your life already....

Kitty litter here is being used for the original intent, but it does hint @ a 'dual purpose' sub enclosure....they don't seem to mind bass lines... ;)

@funkbass, save Dr. E for da cat. ;)

As for different brands, here's a 'consumer research' project....👍😊 

You've got a ready 'recycling' for the brands that don't do the deed. ;)

Win~win....*G*