Simply mix 3 parts vinegar and 1 part water in a spray bottle. Apply to all the car windows (including side and rear) before going to bed at night to help prevent a frosted windshield in the morning. Tried this last night - It did not work.
Recipe for Windshield De-Icer and an Ice Prevention Spray. Mix one part water to two parts 70 percent isopropyl alcohol in a spray bottle for a homemade de-icing spray. Spray your iced-over windows with the solution and the ice will peel right off.
2 Ingredient Car De-Icer Spray
2 Ingredient Homemade Car De-Icer Spray - 1/3 water to 2/3 rubbing alcohol (91)-in spray bottle
DIY Windshield De-icer: Clean, empty spray bottle + 2 cups rubbing alcohol + 1 cup water Fill the bottle with 2 parts rubbing alcohol, and 1 part water. Spray rubbing alcohol solution on the ice and it will melt instantly. I may need this tomorrow.