What would be very interesting is what bug would hunt down and eat bat bugs . Glue boards could be used to check for bat bugs I would think
There is a direct relationship between bat bugs and brown recluse spider infestations. In almost every guano clean-out of any size there will be brown recluse spiders crawling all over the walls and guano piles. No doubt they find bat bugs a fantastic food source. However, telling people to dump a bunch of recluse spiders in their home to combat the bat bugs may be a hard sell!
Was in a large church attic yesterday after removing bat tubes from a spring job, and there were recluses everywhere on the guano areas. Same thing 2 days ago in a college building. At every guano mound at the ends of the peaks, you could easily see 30 to 50 recluse crawling on the walls and guano areas. I've vacuumed up hundreds during larger guano removal jobs. Removed 4000 pounds of guano from a church attic 2 years ago, and probably 1000 recluses along with it.
I always tell people the bats are just a secondary worry.... the real issue is the guano, bat bugs, and spiders that are present with larger colonies. It's the little friends that you need to worry about more than the bats themselves.