einy (Forum Supporter)
einy (Forum Supporter) Dork
8/23/23 6:06 p.m.

I pulled a dumb-*** move and accidentally dumped about a cup of liquid grill grease on a new section of concrete tonight.  Any tips to try to clean it up, so it doesn't stick out like a sore thumb for eternity?  I have an old white towel on it now to begin soaking it up, and at least plan on getting some dish soap scrubbed into it in an hour or so. 
 

They concrete I was poured about 4 months ago, and has a brushed texture if that matters.  Only sealant on it was what the contractor sprayed as a curing agent when it was poured.

Stampie
Stampie GRM+ Memberand MegaDork
8/23/23 6:11 p.m.

Don't scrub.  Pour dawn on top of it in a thick coat and let it sit.  The oils will float to the top.

TJL (Forum Supporter)
TJL (Forum Supporter) Dork
8/23/23 6:12 p.m.

A hot water pressure washer would probably do it. 

calteg
calteg SuperDork
8/23/23 6:30 p.m.

Laundry detergent (I like Era, cause it's cheap)  + denatured alcohol. It will  pull even years  old stains out

wvumtnbkr
wvumtnbkr GRM+ Memberand PowerDork
8/23/23 6:32 p.m.

I like kitty litter and really grind it into the concrete by dancing all over it.

APEowner
APEowner GRM+ Memberand UltraDork
8/23/23 6:34 p.m.

I've used brake clean and an air gun to remove automotive type grease from fresh concrete.

 

1988RedT2
1988RedT2 MegaDork
8/23/23 9:39 p.m.

Interesting.  Me being contrarian,  I tend to rub gear oil into the surface of clean concrete for a rich, lustrous look.

APEowner
APEowner GRM+ Memberand UltraDork
8/24/23 10:07 a.m.
wvumtnbkr said:

I like kitty litter and really grind it into the concrete by dancing all over it.

Ah yes, the speedy dry shuffle.  I remember it well.  I've switched to PIG mats so I don't do that anymore.

einy (Forum Supporter)
einy (Forum Supporter) Dork
8/24/23 11:32 a.m.
1988RedT2 said:

Interesting.  Me being contrarian,  I tend to rub gear oil into the surface of clean concrete for a rich, lustrous look.

That would take ALOT of oil on my side, as it's a 35' x 45' pad :-) !!!

jgrewe
jgrewe Dork
8/24/23 1:42 p.m.

I got a mystery oil based stain out of my terrazzo floor when I had them refinished using diatomaceous earth mix with gel paint stripper.  Mix it into a thin paste( think pancake batter) and spread it on the stain, cover with a plastic bag, tape the edges down and let it sit for a day or so.

1988RedT2
1988RedT2 MegaDork
8/24/23 3:10 p.m.
einy (Forum Supporter) said:
1988RedT2 said:

Interesting.  Me being contrarian,  I tend to rub gear oil into the surface of clean concrete for a rich, lustrous look.

That would take ALOT of oil on my side, as it's a 35' x 45' pad :-) !!!

Agree, especially with the brushed texture.  Mine is smooth.

I like the heavy application of Dawn idea, then follow with a hot water wash.  Good luck!

DrBoost
DrBoost MegaDork
8/24/23 3:58 p.m.

Dawn dish soap, scrub until you can't scrub, then put the kids to work scrubbing. Then put sand, or diatomaceous earth would work as jgrewe said.  
Ask me how I know how to get 30 gallons grease out of new concrete......

peanutpckrupper
peanutpckrupper Reader
8/24/23 4:08 p.m.
APEowner said:

I've used brake clean and an air gun to remove automotive type grease from fresh concrete.

 

Seconding this. Brake clean works great on concrete. 

einy (Forum Supporter)
einy (Forum Supporter) Dork
8/25/23 6:46 p.m.

Well, I tried the dish soap and scrub combo, and it worked wonderfully.  It didn't hurt that it rained like a banshee yesterday morning, I suspect.

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