Two employees came when scheduled to assess a possible issue with a floor drain from the laundry room to the main drain. They examined the problem, opened up the main drain, and using a camera fastened to the end of a snake, determined that water was flowing properly from the subsidiary drain into the main drain and that everything was in fact operating correctly. They gave me a DVD with a movie showing water flowing from the laundry room drain to the main drain, confirming that all was well. The owner of the firm, with whom I spoke on the phone, and the two employees who came to the site, were all courteous, creative and knowledgeable. I highly recommend this company.