My adventure started when we headed to san antonio the jayco was in storage and while there a field rat found its way in.... and died.... upon searching for his entrance i discovered the previous owne...
If it's the wall you could see if this will work. People been using these epoxy's in wooden boat transoms that are rotted and have had good results. Google "Git Rot Epoxy Wood Sealer" at this point it's at least a look.. Not expensive and not too hard to work.