Three inches of gravel should be placed in the crawl space under homes to discourage rodent burrowing. In the case of continuing problems, galvanized metal flashing should be placed around the base of homes, up to a height of 30 centimetres and buried in the soil to a depth of 15 centimetres. Dishes should be washed immediately after use. Shelter and food sources should be reduced within 30 metres of the home. This involves storing pet food in rodent-proof containers, cutting vegetation and removing trash and old vehicles that may serve as rodent nesting sites.
Special precautions apply to campers and hikers.
They should avoid rodent, burrows and their nests. They should not use cabins or other enclosed shelters that are rodent infested until they have been cleaned and disinfected. Do not sleep on bare ground. Keep food in rodent-proof containers. Use only bottled or disinfected water.