Made of durable plastic, they come in three poses: Crouching, laying, and standing. They also possess hinged jaws and positionable tails to help balance them and to set each mouse apart from the others. Although based on actual mouse skeletal structure, some artistic license is taken by giving them ears. It is suggested to place them in places such as one would find an actual mouse around the house, such as in shadowy corners, placed on high shelves, or even near the entry to appear as if aggressively ready to nip at the ankles of anyone who enters.