Any scratch marks in the attic or on the exterior walls of the house may be a sign of bats moving around.
How to know if you have bats in your attic.
Guano droppings produces an almost toxic odour that s similar to ammonia and a definite sign bats are somewhere near.
Bats are nocturnal animals which mean that they sleep during the day and will only come out at night.
You see the bats flying around your house during sunrise sunset.
Check for dark brown stains around your roofline dormers vents and roof trim.
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.
Stains on entry points at the house of corners below the roof might be another sign.
The top signs that bats are in your house are.
Bats usually leave their droppings in apparently designated areas so it s almost impossible not to see it.
You see piles of black droppings on your attic insulation.
If you have bats in your attic you re definitely going to find piles of bat dropping scattered across your attic insulation.
Like most of the signs above guano around the home isn t necessarily a sign but if you see it in your attic then you know you need to call someone.