We recently put our 5th wheel in storage on a farm field in southern British Columbia. The owner warned us that mice were a problem, so we set out four trays of blue poison mouse pellets. A week lat...
We prefer to trap as well for the occasional rodent that gets in. Also, I don't like poison because of it killing owls and other wildlife that will feed on the poisoned mice.
I don't want to take the chance that a rodent will crawl into a space I can't reach and die.