A few days ago I noticed a scratching noise coming from inside a wall in the basement. I haven't noticed any mice droppings or evidence of mice since I've lived in this house (a little over a year), and the scratching noise just started a few days ago. The wall separates the main part of the basement from a storage closet where the oil tank is, and the side of the wall in the closet is just covered with insulation and not drywalled over. There is a gap between the ceiling and where the insulation starts, which is probably how the little guys probably fell in between the studs. I got my camera and stuck it through the gap and tried to take pictures of what was making the noise in there, and from the pictures I see what I think is some sort of pile of bodies (the zoom really isn't too good on my camera) in one corner of the space, and one living scratching guy.
I'm wondering how long they've been falling in and dying in there, and how did they all end up in one pile? There is no food down there, what is attracting them? Is it worth cutting a hole at the bottom of the insulation there so they can find their way out?
Thanks, gladiola