A weekly wash at G Force is one of the best ways to protect your car’s finish. If your car is exposed to corrosive materials such as salt, sand, gravel, bugs, and bird droppings, it should be washed often. The same can be said for cars in areas of high humidity. Moisture attracts contaminants that promote a variety of chemical reactions that can destroy your car’s finish. Frequent washing is essential to protecting your car’s finish.