no charcoal brickettes (unless your planning on lots of crushing, still then I don't think that its as good), and no kitty litter (unless you want your weed smelling like it), spend the extra bux & get the right supplies, and you'll be smell-free.....:wtf: -- look at petco or similiar for large boxes of fish-tank charcoal, or call a larger-aquarium store that sells salt water supplies and get a 50lb bag. -- :rasta: