The company uses a large rotating disc to clean concrete surfaces instead of a high pressure washer. The rotating disc threw dirt and debris on the garage doors, stucco walls, front door, railing, and columns. It was a terrible mess. The crew just left without cleaning up the dirt and debris. I spent over two hours cleaning up the mess since I had little confidence the cleanup crew would do a good job. This is my first and last time using Biocleaners USA. I do not recommend using this company. Find a company that uses high pressure power washing equipment. read more