Question: can rubbing alcohol be used as a deicer?
Answer: To make your own de-icer, combine one two parts 70% isopropyl alcohol with one part water and add a few drops of dish soap. This simple cocktail sprayed on an icy windshield will quickly loosen the ice, making it easy to remove using an ice scraper (or even windshield wipers, if you're willing to wait a little longer).