The Safeguard Rodent Trap is perfectly designed for mice, voles, chipmunks, rats, flying squirrels, etc. It measures 10" x 3" x 3" and is solidly made of galvanized metal, it has a positive locking rear door for baiting and animal removal. It has a zero-clearance door and the trigger/pan assembly can be set as sensitiviely as needed. It has holes for air circulation in the top and sides. Folks looking for Sherman traps will find this trap a pleasant alternative. Don't pass up those lucrative chipmunk jobs any longer. Just dig these into the mulch beds, covering sides and top and watch the results. Compare these to similar models we think you'll be pleased.