In the event there is waste material leaking – First, check the waste container and make sure the cap isn’t over tightened. If the cap is over tightened it will twist the bag inside the box and reduce volume and cause an overflow. When putting the cap on the threads should just barely catch. It should just be tight enough to hold the cap on. If it still leaks perform a load cell calibration. This will calibrate the scales under the waste and material bottles.