A snake or an auger tells you a line is clogged. It doesn't tell you why, and it can push right past the actual problem without ever revealing its location. Our inspection camera catches things a plunger or a guess never will.
Tree roots growing through a joint seam. A pipe that's sagged and started holding standing water, sometimes called a belly. Offset joints where sections of pipe have shifted out of alignment. Corrosion and scale buildup inside older cast iron. Cracks from ground settling or from frost heave, which shows up more often after a hard Ontario winter. We've also found collapsed sections that a homeowner assumed were just a stubborn clog, and the footage made it obvious this wasn't something a bottle of drain cleaner was ever going to fix.
If a line keeps clogging even after professional drain or sewer cleaning, or if you're dealing with slow drains, gurgling toilets, or a damp spot in the yard that won't dry out, a camera inspection usually explains why in under an hour.