Who invented this?

Moon sand is EVIL. EVIL EVIL EVIL I tell you. Whoever invented this does NOT have children. I just paid to have my house cleaned last week and now there is freaking moon sand everywhere. I've already told Graham that he has today only to play with it. Then it's going bye-bye.

I know exactly who gave it to us as a gift and boy I'm already plotting payback for their kids birthday next year.