This was an older building with a long history of Bat problems. After several years of having a stray Bat inside the building, management decided it was time to figure out what was going on and solve it once and for all. We came out and found multiple areas of entry along with several areas to guarantee the Bats would not return. This particular building had gaps under the gutter line where bricks were missing, the Bats were simply flying straight into the void space above the upper level drop ceiling. Since then they have not had any other Bat exposures inside the office space.