Pour vinegar into the bowl. Let it sit for an hour. Scrub with a brush. Flush. The ring under the rim? That’s calcium’s throne.
For a deeper clean, pour a cup of vinegar into the overflow tube (the hole in the tank). It cleans hidden deposits. Your toilet will flush like a champ.
Bonus: Your bathroom will smell like a salad dressing factory. Open a window. It’s a small price to pay for victory.