This may be unnecessary but I can always undo it: I bought two junction box covers and screwed them over the two plastic drains--the one under the heat pump and the other under the refrigerator controls area. This should help discourage rodents while my A-frame is stored elsewhere this winter. The two covers may also help keep dampness out.
photo one: drain under heat pump--before. Photo two: after.
It's never too late to have a happy childhood!
Lee, WU0V, and Courtenay, N0ZDT
2011 Rockwood A128
2000 Silverado 1500 pickup
60W solar system
2000W inverter generator