Abstract: A trash bag cinch device and method of use are provided for securing a trash bag to a trash can. According to one embodiment, the cinch device includes a collar, and the collar includes a base with teeth and a cuff with teeth. The cuff is moveable between an open position and a closed position and, when the cuff is closed, the base and the cuff describe an opening. And, when closed the base teeth and cuff teeth generally point toward the opening. The cinch device further includes a clamp adapted to secure the cinch device to a trash can rim. When thus positioned, a portion of the trash bag may be threaded through the opening and held by the teeth, thus securing the trash bag to the trash can.