Pathetic waste of time & Energy - Inert
Don’t waste your time or money here. I would have gotten the same result from pouring baking soda on my rust stained concrete. I followed the directions precisely, including using warm water to dissolve the granular and let it soak. I finally tried mixing a thick slurry/paste directly on the stains and let that sit for a long while - Nothing! No effect. Sad part is I had awesome results using White Ox spray from Harbor Freight in years past; however, they don’t sell it any longer.  Run from this!
Rating: 1 stars