Just checked on ours yesterday. We cold store for these long Michigan winters. Everything looked good. Cover is in great shape despite several significant winter windstorms we've had. Very little snow on the roof & no animal tracks in the snow. The lot owner where we store the trailer has 2 cats that patrol the area & take care of the rodent population. Owner said in all the 30+ years he's been there, he's never had one customer complain about mice or critters getting into their trailers. A tip I can pass along to those who cover their trailers...take some plastic milk or soap cartons...the ones that have handles....& fill them with sand. You'll need 3-4 pair of them. Then, starting at the back of the trailer, throw a piece of rope over the trailer. Tie one end to one of the handles, then go around to the other side of the trailer & put the other end of the rope through the handle & adjust the length of the rope so that both jugs are off the ground, just below the wall of the trailer & tie off the rope. Place the remaining pairs of the jugs equally apart from the other pairs up to the front of the trailer. doing this will allow the cover to billow out slightly in higher winds, but not so much that the cover acts like a sail & can pull, get caught on the trailer, causing the cover to rip & tear. You may get a small hole or two, but they're easily patched when you take the cover off in the spring. Just be sure to do the usual wrapping & padding of any corners, sharp edges, etc. before you cover the trailer.
"When the going gets tough, grab some cold beer, a good fishing pole and RUN LIKE HELL!!!"
2008 Ford Expedition EB, 5.4, heavy duty tow pkg
2013 Jayco Whitehawk 27DSRL