Hi there! I have a quarter acre goat pen that is just fenced in with 4" fencing. We seen huge increase in snake population in our neighborhood this spring. Mostly just Rat snakes but also some Cottonmouths. I have started to spray vinegar, cinnamon or clove oils around the outside of the pen but have no idea if that works, just google information. Any suggestions how to help deter a snake from entering the pen area? I have a dog who is free to roam so anything poisonous is out.