I was sent over to a home in the city to clean the main drain line and sanitize the cavities. The client had been experiencing some issues with their plumbing, and they wanted to make sure everything was in good working order. I used a high-pressure water jet to clean the drain line, and then I used a specialized cleaning agent to sanitize the cavities. The client was very pleased with the results, and they said they would recommend my services to their friends and family.