You can figure out the bait- fresh chicken, meat, etc etc, but to catch a fox in a "box" trap is tough- make sure you have solid base- no side to side motion at all as the fox walks in if he/she does commit. You can spread some dirt, leaf litter onto the floor of the trap and tamp it down a bit- want it to look and feel like the natural forest floor to the fox. You can pick up a bottle of fox bait, gland lure, etc at your local sporting goods shop. Good luck, Keystonepaul.
edited to add- don't forget- as little human scent as possible. I don't see this mentioned much at all- latex dish washing gloves (new) will work, plain old latex disposable gloves will work as well in a pinch. Don't bend down and kneel at the trap. What I would do is take a garden trowel and boil it, might even leave the trap for a day or two in a local stream if one was close to wash away any human scent- careful where you store it so it doesn't pick up any gas/oil/ human smell as well. Then walk with it to where your going to put it (with gloves on) crouch down, don't Kneel) trowel your area for the trap flat "bed" the cage trap solid. trowel some of the ground cover into the trap to cover the wire while being careful not to interfer with how the trap will spring. set the door back away and check it from afar. Only return to the actual trap to replenish bait or stair in pride and wonder at your trapped fox. good luck Keystonepaul
