Citric acid. It's the stuff they sell to clean coffee makers and similar appliances. It is also used in the food industry so you can sometimes (rarely) find the powder/crystals in the seasonings section at Walmart and elsewhere for cheaper than the coffee cleaning stuff. I always get a few pouches whenever I see it because it's not common but very useful for that purpose.

Throw a bucket of water directly in the toilet bowl so it will flush itself out and leave only a shallow water level, so less water in the bowl means more concentrated acid solution. Pour 2-3 table spoons of the stuff and leave it overnight. Next morning, use the toilet brush to finish off the job.

Do a search on pumice stone

craziest thing. I just had a slight toilet clog and used "green gobbler" overnight to eliminate it and treat the pipes (it's non caustic and safe for all pipes )-- all the stains in my toilet were gone as a side effect. I know i sound like a commercial but i was shocked in a good way!

Have lots of iron in the water - even with a filter there are some stains. Best thing I found:

https://www.lysol.com/products/bathroom-cleaners/lysol-toilet-bowl-cleaner-with-lime-rust-remover

For a white bowl we use a Rustoleum product called Whink and it works quite well. Don't use it if the bowl is not white as it will mess up the color.

CLR works.

Your submission has been removed for one or more of the following reason(s):

• Your post was regarding cooking, cleaning, general maintenance items.
• Your post was regarding sewing, general automotive repairs, cosmetics.
• Your post was regarding software design, CNC, 3D or laser printing.
• Your post was otherwise not considered a good topic fit for this subreddit.
• Please consider submitting these projects to /r/crafts, /r/homeimprovement, /r/woodworking, /r/electronics or /r/findareddit to help you find a subreddit applicable to your project.

Please read our Full Sub Rules before resubmitting.

If you believe this was a mistake, please message the moderators.

###Do not respond to this comment - you will not receive a response.

For a White Porcelain toilet, iron-out works best for me. Follow the directions for clearing rust from the tank and bowl. One area where I've had stains is the side of bowl where the tank water comes out of the rim. To get those out without having to scrub, I fold up 1 or 2 TP sheets, dampen them, put iron-out on to the sheets paste and them over those streaks. Let it sit for 30-45 minutes, then flush. It's cleared them up for me. I've used pumice too and it's worked but I've had to scrub to get those off.