Use a Bag of Warm Water
Fill a plastic bag with warm but not boiling water; boiling water may crack the cold windshield. Move the bag over the icy windshield to remove the glaze. This works well with ice that’s not too thick. Wipe off the water quickly to prevent re-freezing, or use the windshield wipers and your car’s defroster.
Pour Warm Water
This is for thicker windshield ice. Again, use warm but not boiling water. Pour the water on the windshield, then quickly brush off ice chunks and wipe off the water before it freezes. You can also clear the water with the windshield wipers and the defroster.
Run Defroster With Visors Down
Flip the visors in your car down at night and set your defroster on high before turning off the car.
In the morning, hit your car’s auto start and the defroster will blow air that will gradually warm up the inside of your windshield. The turned-down visors will redirect the air back toward the windshield instead of into the cabin, increasing airflow and decreasing de-icing time.
Use an Engine Block Heater
An engine block heater warms your engine throughout the night. Then when you turn on your defroster in the morning, you’re blowing warm air immediately, decreasing the time needed to de-ice the windshield.
Use Hand Warmers
Activate simple hand warmers and run them over the inside of your windshield, thawing ice on the outside. Don’t hold the hand warmer at any one spot for more than 10 seconds to avoid cracking the glass. When the ice has melted or broken up, turn on your wipers and clear the windshield.
Use Microwaved Rice Packets
Fill two socks or mittens with uncooked rice, then microwave for 30 seconds. Grab one packet in each hand and gently glide them over the interior surface of the windshield glass. As with the hand warmers, don’t holding the heated packet in any spot for more than 10 seconds to prevent cracking the glass. The heat from the rice transfers to the glass and melts the windshield ice.
You can also use a hot water bottle filled with warm water. As with the rice packet, slowly move the bottle across the inside of your windows while you’re sitting in the car.
Spray Rubbing Alcohol and Water
Mix one part room temperature water with two parts isopropyl (aka rubbing) alcohol in a spray bottle. Liberally spray this mixture on the windshield and wait a minute or so to let it work. Then brush off the ice and/or turn on the wipers. The isopropyl alcohol prevents the mixture from freezing, so you can keep the spray bottle in your car.
Spray a Commercial De-Icer
Spray a product like CRC Ice-Off on your windshield. Wait a minute to let the de-icer work, and then wipe away the ice. One 12-ounce spray can may not be enough, so buy two. Prestone Windshield De-Icer comes with a lid that doubles as an ice scraper.
Use Plastic Household Items
Use the side of a ruler from your child’s school supplies and scrap off the ice, or let your child do it and offer a reward. A credit card also works but takes a lot of time. And make sure not to damage the magnetic strip on your card. Another option: Flip over a hard plastic food container and scrape the ice with the edges.