We had a drain backup in the basement and when I called Vitaliy, he had a technician, Walter, come over almost instantly. Walter brought in his special camera and tool and identified the problem very quickly. We agreed to have the work done, along with a back water valve to prevent a sewer back up. Walter created a small, enclosed work space in the basement where he had to dig up under the basement floor and when done, you would hardly know he had been there as it was left squeaky clean!!! Plus, everything was done sooner than promised. What a great experience dealing with this company - hugely recommended!!!