CLR Multi-Use Calcium, Lime & Rust Remover, 28 Ounce Bottle (Pack of 2)

I pour this into the water tank at night before bed and do not flush the toilet until morning. I could tell right away if it worked by how fast the water goes down when flushing. We have very hard water here and I try to use this product every 4 to 6 months. I haven't had to replace any parts in the toilet for over 2 years. Including the flapper.Update: I still have not changed any parts on the toilet. After leaving overnight the toilet is so clean. Flushes like a new toilet.

My tub had some rust and a coat of grime on it. I filled the tub with hot water and added one of bottle and it made it like new!

I used this at the base of our toilet bowl. I ended up using a whole bottle at at two consecutive times and a lot of elbow grease. It took a lot of scrubbing but it was really crusted so all in all if we had done this sooner it would have been great

First, allow me to say that I did not taste the product. I'm fairly certain that this is one of those, "don't lick that" products. But Amazon wants it to be rated on flavor. Please, Amazon, I'm a Millennial. It's Gen Z that eats the tide pods.Anyway.I have very hard water in my house. One hot shower and there's rust stains on the wall. It's bad. As a result, every year or so, the float on one of the toilets starts getting hung up, which means the toilet just keeps running. At first, I thought the float assembly just needed to be replaced, but on a whim, I decided to try this first. It was a fair amount of trial and error. I didn't want to risk eating through the float assembly, which had been replaced earlier with something cheap, but I also didn't want to waste product. So I turned off the water to the toilet, drained the tank, dumped a bunch of CLR onto the offending part, and let it sit for 2 minutes. Then I diluted the daylights out of it and let it sit for about an hour. Turned the water back on, flushed a few times to rinse thoroughly, and found that my problem had been resolved.I did have to crack a window to prevent the fumes from being overwhelming, but other than that, I have no complaints.

I restore old tools and use Krud Kutter, Simple Green, an electrolysis tank and Arm & Hammer Super Washing Soda, Evapo-Rust, Loctite Naval Jelly, and Vinegar. Which one I use depends on the job - how big, how delicate, if it's painted or not, if I want to leave the paint on or not, how rusty it is, etc. CLR is my go to for medium sized projects with medium rust, on things that are super sturdy - like a saw for instance. For larger jobs like a piece of cast iron I would go with the electrolysis tank. For small but tough things like bolts, or tools with heavy rust - Loctite Naval Jelly or a long soak in the Evapo-Rust. CLR works fine.

Good cleaning product overall for faucets, etc

I've been a fan of using CLR for all sorts of projects around the house, including cleaning out my coffee maker. You can actually see the calcium deposits falling into the carafe during the cleaning process. Also cleaned some old coins, some old rusted and calcified random items around the house. The price for 2 bottles is better than going to Home Depot or Lowe's. Get it here instead.

This is a great product!! My quartz countertops are a matte finish, and due to the hard water where we live, I’m always struggling to clean the white scale that builds up behind my kitchen faucet. I’ve tried every kitchen product out there, and none of them work. Enter CLR, which I thought was only for cleaning out clogged pipes. This is a different product than the one for your pipes, so be sure to use the right one. It still takes a little bit of scrubbing, but it DOES remove the white calcium buildup on countertops and faucets.