Vent to the outside.,., about the only way I know to kill humidity.,.,., vent to the outside and pull dry air in from the rest of the house.,.,.,you can buy all the stuff at any building supply store.,., your gonna need a small fan or 2.,.,12 volt fans., use almost no electricity., can be run nonstop and are dead quiet.,., a 4 inch or so should move the air enough.,,. some kinda tubing., I use aluminum flex tubing for everything like that.,., aluminum doesnt rust.,., its flexible., expandable.,., and also sold in a 4" diameter to match the fans.,., your also going to need some kinda vent cover to cover the opening to the outside of the house.,., a dryer vent works well if your coming out of a wall.,., a roof vent and some flashing if your goin up.,,.., also be sure to cover any outside opening be it in a vent or otherwise with metal screen to keep any critters out.,., dont go cheap.,., rats and mice will chew through plastic in a few minutes.,..,., with everything.,., you should be able to get it done for under $50
You can run dehumidifiers and such.,., but your electricitys going up in smoke.,.,., If you got the room.,., you could try a sand garden or something.,., absorbent media.,.,.,., hang some bags of rice in there or something.,.,lol.,.,., good luck
