Bat skin secretes an oil that rubs off on the walls of your attic leaving a tell tale sign that you have unwanted guests.
How to tell if you have bats in your attic.
The top signs that bats are in your house are.
You see a bat in your house.
This is one of the most obvious signs bats are living in your attic.
Piles of droppings in one corner of the attic or near the entry point droppings on attic insulation stains on the attic walls from urine.
Any scratch marks in the attic or on the exterior walls of the house may be a sign of bats moving around.
If you hear chirping bat sounds from the attic or very close to the home at night or before dawn you may very well be hearing bats.
Stains on entry points at the house of corners below the roof might be another sign.
If you have bats in your attic you re definitely going to find piles of bat dropping scattered across your attic insulation.
Bats are nocturnal animals which mean that they sleep during the day and will only come out at night.
Check for dark brown stains around your roofline dormers vents and roof trim.