If you live down here in the deep south you use them all the time. We don't have a winter down here and it's the only time when humidty levels are low(kinda)I have to use them. When they turn gray take them out and into a warm oven. I put mine in the warming tray. You can re-use them a few times but they don't last forever. I get mine form a marine place.That bass store place should have them. We couldn't get buy without them down here. I can't say enough about them. I throw them in the Camaro and Vette eventhough They are both driven year round.

[QUOTE=dwright]If you are going to tarp it, watch out for the   mice. [/QUOTE]