What is the best way to keep squirrels out of your yard? I have killed about 8 of them in the past year with a pellet gun. You think they would have got the message but all the new grass I had planted has holes dug in it everywhere. I have holes all over my yard from them hiding nuts. All in my garden too. Tried cayane (sp) pepper and it worked for about 3 days and they were back. Took me so long to grow that grass for it to basically look like it did when I started.