[Lippyp]

I would definitely go with the moisture traps if your truck is outside and you need to keep the windows closed. I have used them on various cars over the years and whilst they may not stop the problem entirely they do make a difference. Just be careful with the water that collects because the crystals dissolve into it as they trap the moisture and it becomes corrosive (Alkaline) so don't let it get too full before you have to move it to empty it. If you truck is in a secure garage leave the windows open, nothing works better than airflow! (the moisture traps work best in a sealed environment so probably won't help much with the windows open as you will be trying to dehumidify your entire garage!)