Needless to say, you can not properly fix your bat problem till you find out how they're getting into the building. This requires a very thorough inspection of the entire structure. You have to pour over every inch of the building, and you need to have a sharp eye. Bats can enter a gap as little as 3/8 of an inch! Expertise helps when doing a construction inspection for bats. A knowledge of their behaviour, as well as the often subtle signs they leave behind, helps a great deal in identifying all of the entry points.
Access to the perfect tools helps. Bats frequently enter and exit at very significant areas. They prefer it that way, so they are safe from predators, so they have space to swoop out, and clearance to fly in and out. I utilize many ladders, around 40 feet. I have to move the ladders around many times to get in all the little nooks and crannies. I often climb on the roof, and swing over the border to look up and to all of the eave openings, fascia boards, and other regions that bats can use to enter a building.
One of the first things you can do is search for the droppings. Locate the droppings, and you will discover where the bats are moving in and roosting. Sometimes the bat waste will accumulate on the floor or lower shingles of a home, beneath the entry point, or sometimes it is going to be stuck to the side of the wall. Only look up, and you will probably find some entry points.
Animals are excellent at hiding themselves, and most of the time, bats wedge themselves into concealed gaps. The majority of the time, I don't really spot bats in the attic - in reality, I would say less than 10 percent of the time do I really see bats, even though there are countless there - wedged in the walls, between fascia boards, etc.
On rare occasion, you will actually spot bats roosting in an entry hole. But this isn't common.I've left out one of the most crucial areas of the bat review: get outside , and watch the bats come out! You'll be surprised by how many you see departing from some openings and holes you didn't even know existed! The night watch is vital, in my opinion, toward obtaining a complete grasp of the bat situation, and correctly addressing it.