How much powder is used per gallon of water?

For comparison, the commercial product Goof Off Rust and Stain Remover, according to its MSDS, contains 10% oxalic acid so I would start with a 10% -12% solution (~0.8 -1 lb in 1 gal, 8.3 lbs water); and if that does not work increase the concentration in 10% increments.

how soon can a pet walk on the deck after using?

Depends on how much you love them, I guess. Actually, it should be okay after a good thorough rinsing. Don't let them drink any puddled water, though. It usually degrades in the environment in less than a day.

Is this product Oxalic Acid Dihydrate?

You would have to call Florida Laboratories Inc. and ask them, as their packaging only shows the product as Oxalic Acid 99.6%. www.flalab.com

Will this acid clean rust stains from well water iron on my driveway?

use of Oxalic acid for rust removal on driveways

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Florida Laboratories OXALIC Acid 99.6% 5 Lb. Deck, Crystals, Metal Cleaning- Rust Removal, Wood Stain Remover and More!

Product ID: 680089806

Details

Brand
Florida
Item weight
2.27 Kilograms
Item volume
5 Liters
Manufacturer
Florida
UPC
741296770603

🧪99.6% purity for maximum effectiveness

⚙️5 lb bulk size for extended use

🛠️Multi-surface rust & stain removal power

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5413072₫

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Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧼 Clean smarter, not harder—rust and stains don’t stand a chance!

BULK 5 LB SUPPLY - Stay stocked and ready with a generous 5-pound container—perfect for professionals and DIY pros alike.
ULTRA PURE FORMULA - Experience industry-grade 99.6% pure oxalic acid for unbeatable cleaning power.
TRUSTED FOR TOUGH JOBS - Join countless managers and craftsmen who rely on this acid for flawless deck and metal restoration.
EXPERT SUPPORT INCLUDED - Access detailed usage instructions and personalized guidance to maximize results every time.
VERSATILE CLEANING AGENT - Effortlessly remove rust, wood stains, and metal discoloration with one powerful solution.

OXALIC Acid 99.6% pure, available in a 5 lb bulk size, is a professional-grade cleaning agent designed for effective rust removal, wood stain elimination, and metal surface restoration. Ideal for both industrial and home use, it offers versatile applications with expert usage support.

Specifications

ASIN	B0147JPQAI
Brand	Florida Laboratories
Brand Name	Florida Laboratories
Customer Reviews	4.7 out of 5 stars 1,204 Reviews
Item Weight	2.27 Kilograms
Item volume	5 Liters
Item weight	2.27 Kilograms
Manufacturer	Florida Laboratories
UPC	741296770603
Volume	5 Liters

Reviews

P**E

Good price

29.09.2025

M**E

Rustaid Shame On You, This Product WORKS THE SAME!!!

25.12.2023

J**E

It is good for my job.

28.04.2025

A**R

Use it cautiously

6.08.2024

C**S

Recommended

18.07.2025

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