Mice like to travel in dark confined spaces so they can avoid predators.
How do mice get into the attic of a house.
So the first reason they like your attic is convenience.
It just happens to be the first place they found.
Run your finger along the sill plate to look for cracks and fill with silicone caulk.
When mice climb up downspouts jump down from tree branches or access your roofline in some other way the first location they will find in your home is the attic.
You can use a blacklight to see the mouse urine at night which can help you find popular entry points.
Rubble foundations and stacked stone foundations are particularly susceptible to gaps that are large enough for rodents to get through.
Once inside a mouse can scurry though any part of the architecture the walls the ceiling and get into the attic where they like to live and nest.
Seal up all of these entry holes using steel which mice can t chew through.
Your cavity walls are the ideal place for mice to use as routes through your home.
Mice can get into your house through cracks in the foundation.
They are also known to find their way inside via entry holes around plumbing and oven gas lines.
Mice may also enter the home through gaps in windows or ceilings as well as through sewer lines.
You can also use a black light to identify a urine trail left behind by a mouse which may show you how they are gaining entry.
If drainage pipes are not properly sealed mice may enter homes through sink or bathtub drains.
Check the eaves the roof lines or vents to see if any mice could get in.