Squirrels keep getting in my attic but I can't figure out where they're coming in. There may also be chipmunks, as I found a bunch of sunflower seed shells inside a lawn chair bag that was laying up in the attic. I can't figure out how they are getting in the attic. There is a vent above the kitchen that I was suspecting but when I checked it the flaps were closed.
How do I locate the entrance where the chipmunks/squirrels are getting into my attic?