moisture control question

[partsman01]

So bought a bigger fifth wheel this summer, a 1999 Coachman 22 foot, and I put a tarp on it and bought a product for controlling moisture,it is the round one, any input on this style, supposed to be good for up to 1000Square feet and not draw too much power, very quiet operation.
Is there better ones, or better ways to do the same thing?

When I had a boat it was just something like a bulb with a tin can for a chimmney, but I don't recall the specs or I would have tried to make one.

[Ray,IN]

I have successfully used Damp-Rid, which is the same thing as the No-Damp in that add. Requires no electricity-which allows storing the RV where electricity is not available, may be placed in several locations, and no storage issue when using the RV, just throw it away. The active chemical in these is usually Calcium Chloride flakes, which absorbs moisture easily.

[450Donn]

I went out and bought the largest dehumidifier I could find at Sears, and it does an excellent job of keeping the trailer dry when in storage. It was worth every penny of the price IMHO. BTY that "tarp" is not a good idea either. Unless you have a cover that allows moisture to escape you are only asking for trouble. In 30+ years of owning RV's of every type I have never tarped or covered any of my RV's.