Did you know you can keep metal tools and hardware in your toolbox rust-free with blackboard chalk? Because chalk is a moisture-sucking material that traps dampness, you can place several pieces throughout your toolbox and its porous nature will protect items prone to rusting!
You can also keep your closets must free by filling up a small muslin or cheesecloth bag with chalk and hanging it inside. The chalk will absorb the dampness and the stinky odor!