[sirobg]

OP: White vinegar for limestone. With microfiber cloth it's very effective.

[gregjor]

You can find numerous subreddits with tips and "life hacks" like this, stuff your grandmother knew. Doesn't seem like HN material.

[sirobg]

I would have liked to get the specific HNers pov.

[archsurface]

Limescale?