In our last class A & present 5er, I have my roof vents covered by MaxAir II vent covers.
I leave the roof vents open year round except when they call for a hurricane type storm.
We used to close everything up tight in our 26’ tt & used those containers of Damprid.
I’d empty the water & replace the Damprid every month.
Once I started leaving the vents open I found no water accumulated in the Damprid containers.
So now we no longer go through that hassle & expense.
I also have our Ehrlich pest control guy stop by & treat the 5er.
Never had a bug & or mouse in it come spring.
Dave, Judy & Daisy May
2010 Sierra 356RL
2011 Silverado 2500 4WD, LT, Ext Cab, LB
Duramax 6.6L V8 Turbo Diesel
Allison 1000 6-Speed Automatic Transmission