Place boards or heavy cardboard on lop of packages. Place dry ice on top of boards. In an upright freezer, place ice on each shelf. You may cover the freezer with blankets, quilts or some other covering, but do not lock it or cover air vent openings. It will help to put crumpled newspaper or excelsior between the cabinet and the blankets.
Gas given off by the dry ice needs a place to escape .
Open basement or room windows or doors to vent out gas from dry ice. Accessibility Policy Copyright 2001, Martin County, Florida. All rights reserved and other copyrights apply. Please see our Disclaimer .