Pranksters yielding eggs can make for a very messy joke, especially if the target is a neighbor's car. Luckily, egg is an organic, protein-based material that washes off cars relatively easily without the need for special cleaners. The trick to removing egg from car paint is to work carefully, without vigorous scrubbing to avoid scratching your car's paint job.
Hose down the egg spots on your car with a garden hose. If the egg is fresh, this may be all you need to remove the offending material. The water will soften dried-on egg stains to make them easier to remove from the paint.
Fill a bucket with warm water and laundry detergent. Use 1/4 cup of detergent for every 1 gallon of water. Many laundry soaps have the added boost of enzymes that help remove greasy or protein-based stains, such as eggs, and will work on your vehicle as well as your clothing.
Remove as many pieces of eggshell as you can with your hands before you try to remove the egg itself with cleaners. Tiny pieces of eggshell stuck to your car will increase the likelihood of your scratching the paint off your car as you work to remove the egg.
Soak some old rags or soft cloths in the water and detergent mixture and place them over the egged areas of your car. Let them sit for 10 to 15 minutes to soften up dried matter.
Remove the cloths from the car and dip a clean, soft sponge in the soapy water. Gently rub the egg stain on your car with the sponge. Avoid using abrasive scrubber sponges that may chip the paint as you clean the car.
Rinse the affected areas of your car with the hose after you have cleaned the egg off of the vehicle.
Dry the previously egged spots with a towel. At this point you will be able to see if the paint has been damaged.
