How do you know if you have ground squirrels ? Since the snow has melted I have now noticed a large number of " trails " in my lawn. They almost look like an animal has removed the grass and made a trail in the grass but I think it is a burrow . I have also noticed piles of grass around some of the trails....I have noticed ground squirrels in my yard in previous years but never damage like this before. If squirrels any idea to control or remove ?