Drain Cleaning AUSTRALIA — Clearing two blocked urinals
Bruce (Drain Cleaning AUSTRALIA @ YouTube) is at a public washroom with a blocked urinal. He begins by plunging it, to try to drain away some of the sewage. After a while, he adds some fresh water, and plunges that through the drain, too. Once it has been plunged way, he pours some hydrochloric acid down the drain to try to dissolve any mineral buildup that might be blocking the drain. After letting the acid sit and work for some time, some more fresh water is poured down the drain. Some more plunging is done to clear the drain, and another bucket of water drains away as expected.
At a different job, Bruce has to clear another backed-up urinal. He starts by plunging it, too, and it drains away quickly. He pours some hydrochloric acid down the drain, and after waiting half an hour, he pours some water into the urinal that drains away fine.