Springtime is a good time to educate your newbie technicians on the difference between bat droppings and mouse droppings. Of course, the main difference when you are identifying them is the bat droppings will crumble as you push on them versus the rodent droppings, which are hard and don’t break apart.
Bat droppings will be grouped several together, usually in corners on the exterior of a building. Bat droppings may also sometimes be found stuck to the exterior walls.
When you are inspecting an attic, if you see tunnels in the insulation with droppings, don’t assume it’s rodent. Shine the flashlight up and around to see if there are any signs of white urine streaks on the wood framing.
You don’t always see bats in an attic, but you can hear the chatter if they’re there. Don’t venture too deep, especially if you haven’t had a rabies shot.
Other signs of bats on the exterior would be a dark brown or black staining where they enter and exit a building. Ninety-eight percent of the time, the entry point is at the highest location possible. Bring a tall ladder or a drone to find it!