As someone that owns a $2 tooth brush, I've always wondered if it was better to put it in a drawer where mould etc might build up on the brush faster, but it wa

As someone that owns a $2 tooth brush, I've always wondered if it was better to put it in a drawer where mould etc might build up on the brush faster, but it was protected from the air in the rest of the bathroom (c.f. Mythbusters "There is poop on everything"). Perhaps the answer is to put the toothbrush in a different room!