Do you have a full cover on it for storage? If so that's their path to the roof. Years ago when taking a trailer out of winter storage I rubbed it out and waxed it. Thinking the best way to keep it looking that good I bought a cover. That winter it became a mouse motel when previously I'd never had a mouse in it. I walked out one day to see a mouse crawling up the inside of the cover and that was when I knew how they were getting in
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07 GMC CC LB dually LBZ, Idaho Rob EFI, DeeZee boards, 50 gal TransferFlow inbed tank
05 32' Montana Mountaineer 5th wheel 2 slides
1941 Ford cpe 454/700R4
1917 T roadster 270 Hemi/4 spd
34' car trailer w/63" semi sleeper on the front
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