OXALIC ACID 99.6% 2 Lb. Deck, Crystals, Metal Cleaning- Rust Removal, Wood Stain Remover and More!

This is an excellent price! I use OA for treating my bee hives for mites. A little goes a long way so this will last awhile. I’ve had great results! Will buy again when it finally runs out.

I have 160+ year old wooden flooring in my kitchen that has been covered on and off for much of that time (I'm guessing based on the old paint, tar-type, material, etc.) and after hand scraping it of as much of the layering as I could, was hoping for a miracle to remove the very, very old water stains and more. I've worked on it in a couple spots so far and it's doing something though I realize now I should have taken before and after pics to get a better sense of the difference.I would have like the product to come with directions for use (water to powder ratio) as well as a clearer sense of how much to buy to do the job I am trying to do.I will try and come back with pictures once I get more done.Also, the internet is filled with the potential dangers of this product at this concentration so I would encourage everyone to read about it before purchasing.So far, I like how it's working but I was hoping to love it.

I had been told this was 'magic' for cleaning the bottom of my boat. About as good as lukewarm tap water methinks. I know a lot of people have great success with it, just not the right product for my use I guess.

Used to remove orange rust stains on my concrete sidewalk. I mixed 8oz oxalic acid with 2 gallon of water in a pump sprayer. I sprayed the area twice to keep the area wet with the solution for about 40 minutes. Then I rinsed the area with clean water and let the spots dry and the stains were gone.

The slime on my boat needed to be removed and this product cleaned off all the grimy crap on the bottom. From nasty to pristine in a matter of minutes. Apply, wait 5-10 minutes and power wash. That simple!

I had a rust stain on q quartz countertop and a slurry of this took it out quickly and did not harm the surface.

There were no instrucions how to mix the product.

Double package with no leaks. Clean product.