I am trying to keep squirrels out of my potted garden and I have to admit I am in awe of their curiosity and determination. At first, my concern was all the cats that like to use the planters for a litter box, but it is easy to keep cats out compared to squirrels.
Not only is my garden area completely fenced but it is covered too because the squirrels easily climb fences. Still, the squirrels never give up. They study the fence and make different attempts to find a way in. When it comes to tenacity you just got to admire the squirrels.