Bats, bats, and more bats!!! I have closed every hole I can find on this building with no success! I have exhausted all options I know of just short of spending the 2 GRAND to have a company come out and essentially do the same thing I did of sealing all access holes.

My last ditch option is ultrasonic bat repeller noise makers. Anyone have any experience with these???

Bat cams!

Why not put up a trail camera to see where they are getting in? If there's a gable with a vent on the gable, the screening on the inside of the vents sometimes wears out or gets torn allowing access. Also check soffit vents.

Had one in the Cute Cape Cod last year. Tenant called and I went over. He was peering out from one of the grills over the vents on the side of the fireplace. Scooted off somewhere. I checked in the basement and there was not a way for the bat to get into the living area. I suspect he came down around the chimney which is stone covered. You might want to put a screen over your chimney. They like cave holes and a chimney probably looks like a cave to them.

if they did not get bitten, why the shots?

No E. B.R. experience here, but

Several Large, plastic, painted Owls, (Bat Prey)

I too heard that bat droppings are used as a natural fertilizer. However, I once saw a report on the Nipah Virus in Malaysia that inspired Soderbergh's filim, Contagion. Infected bats gave the virus to hungry pigs who in turn infected humans.

I didn't know they pooped as they squeezed through a hole. I had poop everywhere in my attic but concentrated in areas that I thought were roosting.

Fixed my problem by using rat sticky traps baited with peanut butter.

I agree with the idea of building bat houses -- give them a better place to live. Bats eat a ton of mosquitos -- I don't mind them around my area at all. Can often see them a dawn and dusk in the summer.

Also, as someone else pointed out, Richard[MI] is wrong. You can't get rabies from bat guano. It's not a concern.

- John...

My understanding is that the ultrasonic repellers are not particularly effective. The University of Florida had a similar problem with their stadium. Bats like their home roosts. And are you going to keep the repellers plugged in indefinitely?

Look harder for gaps. Bats can squeeze through a 1/4" gap between the soffit and side of the house. I would go over there at dusk and look for their exit point. How many bats are we talking about?

In Pa bats are protected.

At sunset g up on the roof and have a look see. They are not going to be hiding from you. I had a problem a couple of years back and found that they were accessing the building via an old chimney.