A few weeks ago our shower started to occasionally drain slowly. As it got worse, I thought I’d have to get out the snake or call a plumber. Then the other day I thought ‘why not just try the plunger?’
30 seconds of plunging, and I suddenly felt the blockage break loose, and the 8cm of standing water drained immediately.
Gotta love simple fixes that work.
Sodium hydroxide can also damage your pipes, so I don’t necessarily know that it’s a good replacement in this case.