Varomorus Oxalic Acid 1 lbs - 99.6% Pure Fine Powder, Multi-Use Cleaner and Stain Remover for Wood, Metal, Rust, Wood Bleach, Hardwood Floor & Furniture Restorer, Pool - Industrial Cleaning Solution

I had just placed a newly made, freshly sanded countertop down. Fresh, clean wood. As Murphy’s law would have it a flashlight I took out of a cabinet had a leaking battery, and not noticing the battery acid leaking out I placed it for a minute on the countertop. The damage was immediate. The wood soaked it up and it was impossible to remove. So when I googled wood stains to hide the problem I ran into this product. I mixed it with warm water and just brushed it on the stain. Magic! It almost immediately made the stain disappear. After a few minutes it was completely invisible. A phenomenal product!

Got this to lighten area on the floor where my blind incontinent cat had an accident. You need to dissolve it in hot water and then apply to the floor and keep it wet so it can do it's thing. I laid down a wet paper towel and left about 6 hours but it lifted the dark stain

Great value. Almost 💯% pure and as long as you are willing to add it to water and mix it's a fraction of the price of the bottles stuff at the hardware store. For wood bleach and crystal cleaning purposes 1/2 a cup to 1 gallon of water. That 1 gallon solution cost $10 at Lowe's.

Great product, works great!!! Thanks!!

Cleans rust from my water filter in minutes

Great product was happy with purchase

This stuff is amazing. The before and after pictures say it all.

What the label says it is. I did not however have it chemically analyzed.