The MASKhaze™ Simulated Smoke Training Tool is a highly effective tool for teaching and practicing how to see and safely navigate in smoke-filled environments. Completely waterproof MASKhaze is the safest, most realistic smoke simulator to use for RIT, Search & Rescue, and Mayday training To apply the MASKhaze to a compatible SCBA mask: Remove the MASKhaze sheet from the package Wipe the SCBA mask lens to remove any loose dust Stick the center of the MASKhaze's film to the top center of the SCBA lens and lightly press downward on the film to secure properly To remove the MASKhaze: Locate and have the paper backing ready Use the upper finger tab to pull the MASKhaze off the SCBA lens and at a downward angle across the face Apply the MASKhaze to the paper backing and store it in a dry place until the next use MASKhaze adhesive can be reapplied up to three times, depending on wear and storage between uses Note: The MASKhaze Simulated Smoke Training Tool is for training purposes only. It should not be used in IDLH environments.