Bio Clean Products: Hard Water Spot Calcium Stain Remover EXTRA LARGE 3-40oz

Great product for removing hard water stains from windows and showers

This worked great for water/mineral deposits in my shower. We have well water. The custom metal, stone, and glass shower is 4 x 4 feet. The shower and well are seven years old. Water testing did not reveal any minerals out of the desired range, but we were unable to get the mineral deposits (scale) off of the interior of our shower with CLR, Comet, Bar Keeper's Friend, Soft Scrub, Ceramabrite, Limeaway, or vinegar. All three brushes worked well except for in the smaller corners and crevices where I had to use a very stiff, nylon hand brush the size of a toothbrush. I mostly used the larger of the three brushes, and by the time I was done, the bristles were about 50% shorter, but none had fallen out. The cleaner has a nice, but strong, minty smell. I used the cleaner and brushes on glass, grout, caulking, metal, stone, and plastic. It took the paint off of the screw heads holding the custom metal, shower door frame, but the frame itself was not damaged. It also took the paint off of the metal drain. I was surprised that it didn't scratch the plastic or metal parts of the shower head, cord, or control knob. It did not damage or scratch the grout, but it did pull up some of the weaker areas of caulking. Initially, I thought it removed/damaged the finish on the metal shower frame, but I just hadn't thoroughly washed off the residue from the cleaner. I'm very happy that I found a way to get rid of those deposits.

This product works! I have tried every possible product to get rid of hard water stains on my shower glass and I was unsuccessful - I tried all available cleaners, vinegar - both regular and concentrated, sand paper, razor, etc. This actually works but it takes a lot of effort and multiple brushes and multiple attempts.There are no instructions on how to use this product and I couldn't find any product demonstrations on this website. After trial and errors, I found the best method was to dab a blob of the paste on a wet dish scrubbing sponge and apply it over the glass and then wear eye goggles and use the brush to scrub the glass immediately (don't let it try up). and stay at each spot for 20 seconds or more for it to be effective and don't hesitate to use pressure. After using it 4 or 5 times, the glass will get clear. I didn't see any scratches on the glass.

I was shocked at the effectiveness and the bundle was a steal! I have high iron in my water and the combination of the cleaner and silicone has kept my toilets spotless. Immediately removed hard water stains on glass shower doors. I will definitely buy again!

I have a shower door with years of hard water built up (white stain). I used a towel with the remover, and it does the job of cleaning up the white residue. HOWEVER, the hard water stain marks remain. I have applied the process a couple of times, and the stain remains. Overall, this product removes the heavy buildup, but it WILL NOT make your glass clear as new.

We use BIO-CLEAN Septic product and have been really impressed with what it does; so I bought this for the bathrooms. Works great on the tile and grout on a shower I installed 10 years ago. We have pretty good water here in the Western side of the PNW but there are times it does get a build-up on things. Brings back the shine and smoothness to the porcelain tile and basins.I would like to see an applicator that actually keeps the goop on the tile instead of getting centrifugally forced up the brush though, tough to spread where needed on the round flat attachments.

We have shower doors in our home we purchased 2 years ago that are over 20 years old. We had tried various cleaners and chemicals to clean them to no avail. We found Bioclean at our local Ace Hardware in a special sample give away display. I took two sample packs and I was amazed at how easy it cleaned a section of one shower door. I immediately order the larger size of product from Amazon that included the scrubber attachment. With very little effort out two shower doors now look brand new! All the soap scrum or hard water build up is gone! I am so very impressed and my wife and I saved much money as we were planning to replace these doors since we thought we could never clean them. The product also cleaned up the chrome fixtures to a like new look!

This stuff works!Bought a house with very hard water and the previous owner let the sprinklers hit a window.I tried everything short of a jack hammer. Really, I was ready to buy new glass. LimeAway, no. Salt Scrub with Lemon Juice no. Razor blade scraper, no. Brand name window cleaners, no. Shower stall soap scum cleaners, no. Other lime and calcium products, no. Automotive cleaners, no. Polishes, no. Nothing worked. Then one day at the hardware store they were giving away little samplers of this stuff so I grabbed one and put it in my purse and thought, yeah, whatever. Did I try it that day? Nope, I had no faith. Then one morning, I thought, today is the day.So I pulled the window off the track, brought it indoors to the kitchen and opened the little sample container of green goo.First off, it smells minty like dental polish, a huge Plus. Second, I was able to clear a streak of glass with very little effort using just a sponge and paper towels. And that was the end of the sample container that led me here for a full container.Recently visited my mom and used it on her completely stained and no longer see-through window, and voila, she has a view again!My photo is glass that I previously assaulted with multiple cleaners, acids, tools.