If the blockage isn't severe, you can often clear it without specialized machinery:

Urine contains uric acid salts. Over time, as water evaporates and urine sits, these salts crystallize into a hard, concrete-like substance called . This is the white, crusty layer you see inside old urinals. It narrows the pipe diameter until eventually, water cannot pass.

The most common blocked urinal cause is debris from the water line clogging the flush valve’s internal diaphragm. If your urinal isn't getting enough water pressure to flush, clean the small filter screen inside the Sloan or Zurn valve. It takes 2 minutes.

Men’s Room, Sector 114, City Football Stadium. Halftime, 45,000 attendees. Event: A single urinal becomes fully blocked after a user discards a hot dog bun. Cascade:

Depending on the severity of the clog, you can try these steps: