Other animals like woodpeckers can create holes in your siding. However, squirrels often leave telltale signs that they’re up to mischief in your yard. They include:
Piles of shelled nuts like acorns or walnuts Raided bird feeders Droppings Trails leading to your house Odd noises coming from your attic Damage to your garden plants Frequent sightings during the day Holes where they’ve dug up their winter stash