Toilet Tank Cleaner & Hard Water Stain Remover, 1 lb, 6 Pack | No-scrub citric acid powder descales, remove rust, calcium, limescale & mineral buildup, eliminates odors, pipe & septic safe

Update: I honestly forgot all about this product until I was cleaning out under the sink and found the second bottle I had. Which then quickly had me check the tanks to see them getting gross again so I made sure to get pictures this go around. This powder honestly had my tanks clean within like 15 minutes and all I did was dump it. If I wanted my tanks 100% clean I'd have to hand scrub along the water line but I'm not that extra. But I've attached the before and after pictures. Let me set the scene. One day, I wake up to use the restroom and notice the water is slightly brown and has something in it that looks like coffee grounds. My first thought is what the heck? Why would my husband dump coffee grounds down the toilet but he hasn't drank any in a long while, and I don't at all, so that stopped that theory. I flush whatever it is and think that's that. Wrong! This time the water is even darker so now I'm investigating. Our towns local page didn't post about any water issues so it's gotta be a me problem. Water in the sink runs clear so it's a toilet issue so that's when I looked in the tank and was greeted by black slush like mineral build-up. Yes, I also realize I should have just checked the tank first but adhd. Anyways, so since the toilet is next to the shower and we have a shower head with a hose, I decide to try and rinse it since it came off the sides of the tank when I touched it. Well, water alone didn't cut it so being the busy mom I am I let it fill back up with water and dump bleach in there. Didn't do a whole bunch even after sitting for hours so moving on to the next thing. This time I tried oxy and again letting it sit. After a few hours the bottom of the tank was clean but the sides still had residue on them and I didnt feel like scrubbing them. A quick Google search led me here and I figured why not. After all, my goal was to just dump something in and having it cleaned with chemicals vs me spending 10 minute cleaning it myself. Read the instructions and you use half a bottle and let it sit overnight. We'll, I really wish I would have gotten a before picture because this thing cleaned the whole thing and I didnt have to lift a finger. I didn't even have to wait all night, for me, it cleaned it within an hour. The only thing that's still dirty is the faint line of where the water ends. That will take 30 seconds to wipe down though since I can just take a cloth and run it along the edge, if I even want to do that. We have 2 toilets and I did the same thing with the other toilet as well and it is clean as well. That one didn't get any chemicals to try cleaning it since I wasn't going to waste product on 2 toilets if it wasn't working. But yeah, 100% recommend if you have hard water and aren't using a water softener because it's an iron and other minerals that built up. As a busy mom, I never even thought to clean my water tanks as well. Especially since I've never had to do it at my other houses. But glad I found this product and it did what I needed it to do.

I don't write many reviews because I'm a busy man but THIS STUFF. OH I LOVE THIS STUFF. Just bought my first house and after a few weeks the toilet started flushing yellow and I noticed a puck in the tank had just stopped holding the buildup at bay. Tried CLR on the discoloration in the tank with some results but nothing amazing. Then threw this stuff at it and I may as well have bought the toilet yesterday. Woke up the morning after throwing this in the tank and it was entirely clean, and it didn't cost an arm and a leg either. I hope they never change the formula of this because I'm going to keep coming back for more if the hard water is prone to staining the tank again.

I scrubbed the inside of the tank best I could before putting half bottle in and letting dry overnight. Took some of the stains out, but not completely. Put rest of the bottle in next night and let it sit til morning. It did remove some more of the staining. Stuff is fairly cheap, so not that disappointed.

I was ready to be a skeptic about this -- I was so wrong! The inside of my toilet tank was absolutely black. I followed the directions exactly and left the toilet untouched overnight. When I checked in the morning, the inside of my tank was clean -- and I was seriously dumfounded. I cannot recommend this enough. I am being absolutely truthful when I tell you -- no scrubbing. Great stuff!

Sometimes works well for rust

Worked great for me and water n tank looked black n disgusting! Let it sit overnight n you will be very happy what you see!

This stuff really works ...use as directed on the bottle and you will see results.. ordorless and easy to use

Cleaned out decades of rust and scale in toilet tank that perpetually stained the bowl. Wish I had before pictures to share. This product works. (Bar Keepers Friend easily cleaned the stained bowl.)

For me works I cleaned the built-in ones it was leaking, my only problem was to scoop in because the hole is small to just chuck in, but after few hours not leaking anymore from the limescale so I happy with that unfortunately can see difference inside because I can't see in but for limescale removed so should everything else es well.

Parece magia, mis tanques estaban completamente sucios, negros de uña temporada que nos estuvo llegando agua sucia, no se podía limpiar tallando las paredes. Use este limpiador y en menos de dos horas ya estaban totalmente limpios, para asegurarme lo dejé el tiempo que mencionan. Totalmente recomendable, funciona

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It cleans everything inside the tank including the plastic parts of the flushing mechanism. I used a few tablespoons of the powder and leave it for a few hours. The tank walls are restored to white and the grudge built up on the plastic is gone. The plastic parts are the hardest to manually clean because lots of the areas are inaccessible but visible. This powder just removes them effortlessly.

Cleaned the gunk build up from the back of the toilet. Follow directions and it works as stated. Has a slight smell but nothing too bad, and worth the clean toilet!