If your plumber hasn't had success after attempting to clear a drain or sewer line with a motorized snake, it could indicate a complete blockage further down your sewer line.

If you unclog sink waste and notice that the buildup is slowing the flow of water in other areas of your home, it's beyond a DIY fix. This is a signal that the clog isn't isolated to a localized, tiny portion of your home.

For the toughest of clogs, a plumber may use a hydro jet. This tool sends pressured water through pipes to break down drain build-up. This tool is often faster and more efficient than a typical drain snake. Hydro jets get rid of the clog, but they're also effective for cleaning drains.

Plumbers use industry tools and techniques to fix a blocked sink. They may use a drain snake or hydro jetting to clear the blockage and clean the drain. They may also use a camera inspection to locate the source of the blockage and determine the best course.