I have flying squirrels in my attic. Removed 7 in the last couple months. In the past couple years I've found my hunting boots full of acorns, hunting tote's packed with acorns. Wife opened a closet up stairs and a flying squirrel was sitting on the shelf looking at her. I used 4 the birds bird repellant caulking around where I suspect they are getting in. Traps have remained empty for the last two weeks. Two more weeks and I'm sealing the hole with metal. If it continues after that we'll be installing strobe lights in the attic.