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How Do Mice Enter Houses?

Mice enter homes through cracks and holes found in walls, floors and foundations. Homeowners commonly do not recognize mouse holes until other signs of infestation appear. Due to their body shape, mice are capable of fitting through holes much smaller than appear likely.

Mice may also enter the home through gaps in windows or ceilings, as well as through sewer lines. If drainage pipes are not properly sealed, mice may enter homes through sink or bathtub drains. They are also known to find their way inside via entry holes around plumbing and oven gas lines.

As a result of dropping temperatures, infestations tend to begin in fall. After a colony enters a structure and finds it to be safe and warm, they rarely venture outside again. Mice proliferate quickly and populations may exceed 200 specimens within a matter of months.

In order to prevent mice from entering the home, all cracks, openings and holes should be sealed with metal or cement. All doors and windows must close properly. Store foods in glass or metal containers with tight lids, and be certain to dispose of all food waste as soon as possible. Contact a pest control professional for help and additional solutions.

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Trapping Mice

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Resources

Dig Deeper on Mice

What can we do about the mice above the ceiling?

Q

Our basement is finished with JYP rock tiles on the ceiling, and we can hear at times (especially at night) mice scurrying above. What can we do?

Is it a mouse or a rat?

Q

I can't tell if I have large mice or adolescent rats.

What should we do about mice in crawl space and attic?

Q

What should we do besides put traps out?

Is it a mole or a mouse?

Q

No websites give any information on getting rid of one in the house. Any advice would be greatly appreciated.

Mice in the oven

Q

How do you make sure there is no infestation, or that they have been removed? Is it safe to use the oven?

Mouse droppings in the house

Q

We cleaned out the closet by the kitchen where we have seen the old droppings and have not seen any more. Are they gone?

What attracts mice in your house?

Q

What attracts mice in your house?

How to Use Mouse Bait Stations

How to Find a Dead Mouse in the House

Field Mice

Field mouse illustration

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