Hope you have better luck, ha ,ha than we're having the 3rd time around. The sink strainers were flipped out of the kitchen and bathroom sinks, squirrelly dropped black walnuts down both. It didn't stop there put one between the pillows - looked like a mouse peeking out. The critter is playing mind games, several nuts were placed between two sheets of bubble wrap on the couch.
We had already (several months ago) plugged/sealed most of the hole/openings with steel wool, expanding rodent foam, and covered large holes with hardware cloth. There was over 50 walnuts 1st time, lost count of the acorns 2nd time. Yes dryer sheets, moth balls and Fresh Cab were used.
The 27.5 HT is supposed to be 3 season, obviously well ventilated for summer only. All I can say after looking a the total picture, after 5 TT and no rodent problem, something is wrong in manufacturing.