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Question DetailsAsked on 6/30/2013

huge 2-3 ft hay like nest in my attic

mouse like droppings in closets and black oil like stains on ceilings

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1 Answer


From your desccription it sounds WAY too big to be a mouse nest, which are usually 3-9 inches in diameter. I would guess a rat or squirrel. Some mouse nest images -

rat nest pictures -

and squirrel nest pictures -

If near the eaves and entrance hole, more likely a squirrel. Mice and rats tend to pick an out-of-the-way protected corner or close to a warm furnace duct.

Mice and rats also tend to use local nest building materials where available - attic insulation, paper from insulation backing or drywall, etc, whereas squirrels tend to import theirs from outside, so typically has a lot of grass and leaves, which is what yours sounds like.

If it has nut shells in it, most likely squirrels. If insect parts, more likely mice or rats.

Due to droppings in closets, that makes mice/rats more likely, especially if there is no way into the closet from the attic - squirrels don't tend to be brave enought to run around an occupied house, and generally cannot fit under a normal door opening. Mouse and rat dropping tend to be very dark and lenticular with one pointy end, squirrel droppings commonly (though not always) tan or brown and look similar to raisins without pointy ends.

The black stains on the ceilings are probably urine drips that have go to mold.

Search the List (in green banner bar) for rodent exterminators in your area and reviews.

Answered 7 years ago by LCD

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