 These traps come in several sizes including model #110 or #120 at about for muskrat and mink, model #220 at about for raccoon and possum, and model #330 at about for beaver and otter.An animal may be lured into a body-gripping trap with bait, or the trap may be placed on an animal path to catch the animal as it passes.In any case, it is important that the animal is guided into the correct position before the trap is triggered.