I believe I have a ground hog hole in my yard. The hole is about 6-8 inches in diameter. I recently pushed some leftover dirt into the hole. When I attempted to tamp iit down, I realized this hole is way deeper than I thought. A day later, dirt has been disturbed further creeping me out :) My G hog knowledge is limited-- can there only be 1 hole? Is there a poison I can dump into this hole? The only good news is that this hole is not close to my house. It's actually closer to the street and a few feet away from the street storm sewer. Any advice would be appreciated.