Depending on the amount of dirt and debris on your vehicle, we will pre-soak it to make it easier to wash. A foam cannon or foam gun attached to the end of the hose is used to spray a thick coat of soap across the vehicle. The foam is comprised of a lubricating solution, which aids in the breakdown of the caked on or thick dirt. After a few minutes of soaking, the dirt has been loosened enough to be wiped across the vehicle with a mitt without scratching or marring the paint. Pre-soaking a vehicle is important because if mud sits on your vehicle for an extended amount of time, it won’t be as easy to remove as normal debris. Situations that would cause an excess of built up dirt would be after a storm or after the roads have been salted in the winter.