They'd tear up truck wiring, build nests, get into feed, steal sockets and small tools.

Built this long box around a 120 Belisle. Works and other critters like cats can not reach in accidentally setting off the trap.

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The hinged end door has a mouse hole like the one at the other end, only covered in hardware mesh. Also has a hook and eye to hold it shut. Pack rat comes in through the far end travels length of box to get the bait, it can also see out the end by the trap (covered with the hardware mesh).

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Stabilized the arms of the trap with zip ties going around screws so the pack rats could not push and pull the trap around while eating the bait.

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