I spoke to our local game keeper about a couple of foxes that i had spotted, and he has shot a few since. He told me about a banned french (?) substance called Renardine (?). This stuff smells like super strong creosote/tar, which stings your nose. I happened to come across some and i have noticed that when i put 4 scent markers out to form a square around my hen house, there was fox poo around the perimeter, but no footprints near their house. My hens all free range daytime and i haven't lost any yet?