If you have leaf stains on your car, there are a few things you can do to try and remove them. You can use a commercial product or a home remedy. Commercial products: There are several commercial products that claim to be able to remove leaf stains from cars. Some of these products use enzymes or acids to break down the leaf matter, while others use solvents or surfactants to help lift the stain. Home remedies: One home remedy that many people swear by is using baking soda. Simply mix a tablespoon of baking soda with enough water to make a paste, and apply it to the stain. Let it sit for a few minutes, then scrub with a brush or sponge. Be sure to rinse off the solution before driving your car. ..