We let our chickens run around out of their coop in the back yard when we are home. They are 18 weeks old. Their new thing is to hang out on the fence! We live in a neighborhood with busy streets, and we certainly do not want to go chasing after them outside of our yard. Has anyone tried using bird spikes? I saw lots of posts about electric fences, but we cannot do that. I thought these (https://smile.amazon.com/dp/B0019F8IX6) may work. Thank you for any tips!