It's easy to overlook the importance of keeping a parking lot clean. Business owners tend to focus on the store-front and the inside of the building, even on the landscaping, but the parking lot is often forgotten. It's just a big slab of concrete that takes care of itself right? Wrong! Not only does debris blow into the parking lot from trees and off the streets or highway, but people will often drop or throw trash out of their cars without much concern. If you are not careful, a parking lot can become dirty very quickly.