dirt hole flat set combo. drill the hole out put bait in it and cover it over with dirt and leaves. don't pack it. spray some urine about 5 feet away. other foxes will look for the food scent. unlike seeing a hole dug out,they might think the bait has been eaten so some will pass. but if they see fresh dirt and no hole and smell food they will start search for the burial hole.also spray chicken blood around hole. use from chicken liver. the fox will cover the blood one place and hide the body else where to.

http://www.youtube.com/watch?v=bMqwtyffoA8