How do you get stains and buildup out of a toilet?
Judy, I've found that a bleach soak is quite effective. It only takes a small amount of bleach, scrub around the toilet and let sit for a couple of hours. Flush away. Of course, this is for organic stains not mineral stains such as rust or scale. That takes an acid such as vinegar or rust out
I'd try using something like Scrubbing Bubbles and let it sit for an hour or two and then scrub hard. Be sure to keep the area well-ventilated!
Lysol Lime & Rust Remover Toilet Bowl cleaner, comes in a black squirt bottle. Scrub with Scrub Daddy or Mr. Clean Magic Eraser.
Pumice stone and elbow grease
Hey Judy: here are a couple of things you can try:
WD-40 The solvents in WD-40 will help dissolve any gunk and lime in your toilet. Spray your toilet bowl and let it sit for about 10 seconds and use a toilet brush to help scrub away the grime.
It may sound like an urban legend, but plenty of folks swear that Coke dissolves toilet rust rings. Here's a site about that: https://spoonuniversity.com/lifestyle/clean-your-toilet-with-coke
Or, you can throw a couple of denture tablets in the water and let them sit over night. Scrub and that should do it.
Be sure to clean the holes under the rim, too. Use a mirror to see if they're rusty or clogged. If clogged, spray with a rust/lime/calcium remover. I get the Totally Awesome from Dollar Tree. Works great:) and try to remove the rust with a metal fingernail file. That's what I use:) Just poke it up into the hole and turn. Don't poke too high because you don't want to crack the porcelain. I use a fingernail file because it will break before ruining anything:)