From the kickstarter page under "How Does it Work?": > "The Decaf Pouch is full of beads that are made of a natural mineral that attracts and binds caffeine. T

From the kickstarter page under "How Does it Work?": > "The Decaf Pouch is full of beads that are made of a natural mineral that attracts and binds caffeine. Through a physical process called adsorption, the caffeine molecules stick to the beads." Yeah. Read my linked paper. The kickstarter photo certainly looks a lot like the primary component in most cat litter. Bentonite/montmorillonite is amazing stuff, but it's not amazing enough to buy in tiny pouches at a premium instead of by the kilo.