stovebolts
Member
I’m pretty sure I have them isolated in the soffit…. They’ve been living in this attic for well over a hundred years. I heard they can smell their home. I can win little battles, but I don’t think I can win the war. I was watching them come out of the soffit the past few nights….Most small bats only need an opening as small as a dime or quarter and they can squeeze in.
It's good you got sealed what you could, but they are definitely coming in from somewhere. The chimney is a possibility. Generally gaps in siding and attics in houses is to blame. I had a friend many years ago that could hear about a hundred of them or so chattering in one wall on the side of her home. They would fly out a gap in the siding at dusk. I remember standing there watching them all with her. It's a bit difficult when it's inside your home they are flying out of.
It can be dangerous because bat droppings/guano is toxic and you don't want that in your walls, it can make you sick. Have those areas they have roosted cleaned if possible. Also, another concern is a bite and while the chance of being bitten by a bat is low, they are still able to get rabies.
I hope you can continue to find a solution to keep them out of your home. There are many places that bats can crawl and sneak into. When in doubt, observe different points of your home at dusk and see if you can spot where they fly out of. It may take persistence every evening, but keep at it.