Run your finger along the sill plate to look for cracks and fill with silicone caulk.
How do mice get into the attic of a house.
It just happens to be the first place they found.
You have to pay a lot of attention and look for small holes even as little as a quarter of an inch.
There are many ways for a mouse to gain entrance into a home.
Mice like to travel in dark confined spaces so they can avoid predators.
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.
You can use a blacklight to see the mouse urine at night which can help you find popular entry points.
Your cavity walls are the ideal place for mice to use as routes through your home.
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.
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.
They are also known to find their way inside via entry holes around plumbing and oven gas lines.
Seal up all of these entry holes using steel which mice can t chew through.
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.
So the first reason they like your attic is convenience.
Rubble foundations and stacked stone foundations are particularly susceptible to gaps that are large enough for rodents to get through.