I thought I'd ask before I need it rather than wait for an overflowing sink.
Moved house. New unbranded bathroom suite came with the house. Wash basin has a push-to-close-push-to-open waste plug. I've never had one of them before and there's no obvious way to take the plug right out for cleaning. Rotating it doesn't seem to raise or lower it so I guess it doesn't unscrew and nothing budges when I pull gently. I'm loathe to pull hard in case I break it when there's nothing (yet) wrong with it.
How do these things normally work?
Any suggestions?
Nick