Anyone know how to keep the inside of a truck cross-over toolbox dry? I've had an $80.00 box and a $600.00 box and everything in between. Always....rusted tools. I live in SE Texas where it's VERY hummid. I''ve used descicant and military ammo cans. Still, rust. Would it help to drill a couple of holes in the bottem of the box? Any other ideas?