Use the Hanging Buyers Guide to assist you in complying with The Federal Trade Commission Used Car Rule that states: “All buyers guides must be posted prominently and conspicuously on or in the vehicle”. The hanging buyers guides help you avoid the mess of adhesive strips and are easy to remove for a test drive since they can hang from the rear view mirror. You can still use these guides to affix to a window by removing the adhesive strips if you choose to do so.