Mice Around Warehouses

In warehouses, it’s important to control mice before they get into the building. This is especially true in the fall and winter months. Once they’re inside, not only do you have a widespread mouse problem, you also risk product contamination and damage. Establish an outside perimeter defense to protect against inside invasion by mice. The more of the following conditions around the outside of a warehouse or building, the more likely that
mice will find their way inside:

Conditions Attracting Mice to the Perimeter of a Warehouse
• Food or feed spillage around loading dock doors, dumpsters, compactors, delivery entrances, or railroad tracks
• Garbage stored closer than 50 feet from the door
• Open lids on dumpsters and garbage cans
• Odors from garbage or animals
• Piles or stacks of trash, building materials, pallets, etc.
• Equipment stored outside, especially in weedy areas
• Dense, low-growing shrubs around foundations that provide cover and hide burrows and food piles.
• Tall weeds, grass, or vines
• Weed growth along fence lines
• Railroad tine edging
• Fruit trees or farm crops within 300 feet of the building
• A ditch, canal, pond, or other standing water near the building
• Areas of loose soil
• Gravel areas with rock of large diameter (greater than 1/2″) rather than small
• Guard dog house or pen
• Neglected sheds, garages, or other outbuildings on the property

Once you have mice around the perimeter of a building, it’s only a matter of
time until they find their way inside.

Potential Entry Points for Mice into a Warehouse
• cracks in concrete slab, or in brick and concrete block walls
• openings around conduits for utility lines (electric, gas, phone, water)
• unscreened roof and wall vents
• roof and wall joints and edges without properly installed metal flashing
• gaps around water pipes and lines for fire sprinkler system
• poorly sealed heating and air conditioning ducts
• worn or damaged floor drain covers
• doors hung too high and without a threshold or metal weather strips
• gaps around air shafts, elevator shafts, trash chutes, and laundry chutes
• spaces around loading docks or doors that don’t seal tightly
• railroad tracks


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