Just had the 25K maintenance done on my '06 GL1800 Roadsmith trike. The mechanic saved the old air filter to show me that mice had chewed up about half of it! I keep the trike in my attached garage and I suspect those cute little critters did the damage last winter as I have been riding almost every day during the summer. The belly pan is NOT going to keep them out. Other than keeping a couple of hungry cats and baited mouse traps in the garage does anyone know of a good deterrent? 