Gray Brothers Wildlife doing an attic inspection in Westport, CT for a possible critter living in the attic.
When doing a proper attic inspection you have to be aware of the possibility that it can sometimes be more than one critter, hole sizes only exclude possible suspects. Holes don’t conclusively identify which species is using the hole. For example, a mouse can use a squirrel hole but a raccoon can’t. The following are some signs to look for when inspecting.
• Gray squirrels need a minimum of 1½” in diameter holes, but they’ll typically be about three inches. You may or may not find droppings.
• Bats need at least a 3/8″ gap and their droppings will be concentrated below where they roost. Also the droppings will crumble like dust when disturbed.
• Birds need various size holes — one inch in diameter would be a minimum — but you’ll often see the tell-tale white droppings where they enter.
A lot of times animals like to enter through corners, gables, eaves and vents, and any place where two boards meet. Over the years, moisture and heat cause the boards to expand and contract until a gap forms. Animals will exploit these weak areas.
These are the main reasons why a proper and professional attic inspection is necessary.