Openning the windows or the vents, just a little, is the easiest way I know of. A fan moving the air around will help as well. If that or the containers that asborb moisture doesn't work for you, you might try using a dehumidifier.
Gary & Trish "PT Crew Member Since 11/2010"
2017 Prime Time Crusader 315RST TE 6.0 : 2007 Flagstaff 206ST MAC Series
2012 F-250 Lariat : FX4 : CC : SB : 6.7L Diesel : 3/55 Gears 2016 Nights Camped - 9
Ventilation is the key. If not, then a dehumidifier. Mileage varies.
__________________ Happy Camping! ///// Richard D.
2006 4x4 Ford 250 SD / 2007 Flagstaff 827 FLS
One very patient wife and one furry child who travels with us. Forty-two years of trailering and camping, and I still have a blast.
Too much humidity for sure is the cause of condensation. Try to reduce the humidity by not boil water on the cooktop. If you have a fantastic fan unit use it. It will ciculate the air in your trailer by reducing the condensation. Depending on the outside weather it can be very difficult to deal with condensation. We camped a lot in late fall long time ago and it was a challenge to deal with this problem. You cannot hold your respiration but just this alone is a factor that cause humidity in the trailer during cold weather camping