Poison Free! Just wind it and forget it! The Ketchall winding mouse trap has been used in homes, restaurants, schools, food processing facilities, hospitals, and other sensitive areas for over 70 years ! Developed by Mr. Kness himself to control mice in a local school in the early 1930's, the ketchall winding mouse trap has become an icon in the pest control industry. Simply wind it up and place it against a wall or other rodent runway and leave it ! Mice will go inside looking for shelter and will immediately be tossed into a holding area. Great for use where poisons cannot be used. Can capture up to 15 mice in 1 setting ! Dimensions: 9 1/4 x 7 1/4 x 5 1/4. 1 Year Warranty Against Breakage.