Rust stains on concrete: How to remove

jeepmedic

Good enough for Gov't work!
Joined
Feb 2, 2013
Location
Cameron N.C.
We have a thread on asphalt stains, now it's time for a rust on concrete thread. How in the hell do you get rid of fertilizer stains on concrete?
 
Does it kill grass? I would hate to kill my centipede, shit has a hard enough time growing anyway.
It's what all the masonry dudes I know use. It's actually worthless without concrete. I think it interacts with lime. It comes in a plastic jug.
 
We have a thread on asphalt stains, now it's time for a rust on concrete thread. How in the hell do you get rid of fertilizer stains on concrete?
Sounds like your fertilizer had iron in it which will stain badly. The summer sun should bleach it out.
 
I had some rust stains on mine from where I had done some grinding and didn't clean the dust off. After researching online I found people using "Works" toilet cleaner. Put it directly on the stain and scrub with a stiff brush. When I rinsed it down I rinsed to the center of the drive to make sure it diluted well before getting into the grass. Never hurt my grass but mines not centipede either. Didn't do too bad on the few oil spots I had either....
 
I had some rust stains on mine from where I had done some grinding and didn't clean the dust off. After researching online I found people using "Works" toilet cleaner. Put it directly on the stain and scrub with a stiff brush. When I rinsed it down I rinsed to the center of the drive to make sure it diluted well before getting into the grass. Never hurt my grass but mines not centipede either. Didn't do too bad on the few oil spots I had either....
the works gel cleaner ?
 
Yes, but honestly I think any of them will work, as long as the active ingredient is hydrochloric acid. I know that was mentioned above but I think its the addition of cleaning "agents" that help. That and its a diluted acid not full strength eat your feet off acid....
 
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