Jelmar CLR PRO CL4PROEA Calcium, Lime and Rust Remover, 28 oz BottleU.S. EPA Safer Choice

This was an excellent purchase! This is super easy to use. The smell was fine. The cleaning powder was impressive. The size was excellent for the price was super effective as I used it on my showerhead and drained and it really helped instantly removal was great and also really helped with The water blockage in the showerhead. I would definitely recommend to any homeowners.

great product! Great cleaner

Good product I have used for years

Very easy to use remove the dirts I definitely keep use it

Worked to clean out a heater core. I now have full heat!

It is spectacular

Does the job! Like everything else in the world, I recall the bottles being so much bigger and less money, but that’s what happens when you become an adult buying everything you wasted as a child/young adult

I was originally disappointed because I used around 60% CLR and 40% water and let it soak for 24 hours and it pretty much did nothing at all to the calcium. Vinegar seemed to be way more effective and cheaper too. White Distilled Vinegar costs $4 for 128 oz, whereas CLR costs $12 for 28 oz (three times a much for almost 1/5th the amount). That means that CLR costs around 12-15x as much as vinegar.But then I tried the CLR a second time. This time I used 100% CLR and 0% water. It did a great job of removing the calcium, so I was happy.I am probably supposed to use fresh batches of CLR each time, but I used a metal strainer and will try reusing the CLR again in the future. I am supposed to clean my warm mist humidifier every two day and CLR is too expensive to be using fresh batches each time. Cleaning Vinegar is slightly stronger than White Distilled Vinegar and costs around the same, so I will try alternating between Cleaning Vinegar and pre-used CLR to keep my humidifier clean.CLR is good at removing rust too. I put a few drops on a screw that I could not remove from a saucepan handle and it removed around half of the rust.