Fishers -- often called fisher cats due to their tendency to carry their tails above the ground like domestic cats -- can be found throughout much of the northern region of North America. These mammals can grow up to 40-inches long and weigh up to 16 lbs., which makes them a threat to most other small to medium-sized mammals. While fishers generally stay away from developed areas of land, they may become a nuisance in newly developed areas, especially those around woods. In such situations, trapping may be the best control method.
Make a bait mixture for the fisher cats. Perhaps the easiest foods to procure that fishers eat are beechnuts, black cherries and mountain ash berries. If possible, get freshly killed mice, squirrels, hares or shrews, as these small mammals make up much of a fisher's diet.
Chop the nuts and berries and form them into 1-tsp.-sized balls. Wrap each ball in 2-by-2-inch pieces of wax paper. Poke five holes in each ball to let the smell escape. If using freshly killed animals as bait, leave them whole.
Place a live mammal trap in a mostly undisturbed wooded area with plenty of overhead coverage. While fisher cats may be found in other areas, they tend to stay in remote areas, with trees for security. The trap must be at least 4 feet in length to ensure adequate room for a fully grown fisher cat.
Cover the trap with small, leafy branches to camouflage it, but do not cover the door. Fisher cats may steer clear of any unfamiliar material such as a wire cage.
Place the bait in the trap. Provide at least 1 lb. of food to ensure that the fisher cat doesn't die in the trap.
Check the trap daily until it catches the fisher cat. If the bait begins to smell rotten at any time, replace it with fresh bait.