Hydrogen peroxide or ammonia also work well too.
Cleaning concrete for staining.
The process is still the same.
Your supplies are likely to be a bucket scrub brush and detergent.
Do choose the right cleaning product for the job see questions to ask when choosing a concrete cleaner or degreaser.
Spray the concrete stains with the soap solution.
To remove pour one eighth of a cup of liquid dishwashing detergent into a spray bottle then top off the bottle with warm water and shake well.
Let it settle for 5 10 minutes then scrub with a stiff.
Clean and prep your old concrete as outlined above apply the stain let sit the appropriate amount of time then neutralize.
Rust oil grease paint or glue stains each have a recommended stain removal technique.
Because acid stains need to penetrate into the concrete surface to work it s especially important that the concrete surface is completely clean.
Spray them with oven cleaner.
The stain will not take at all if you use acid as a cleaner.
Cleaning an old concrete slab so it will take an acid stain can be very difficult but it is possible.
Acid staining old concrete is the same as staining new concrete with a few caveats.
Resealing your driveway every few years will restore its like new appearance and make it less vulnerable to stains.
Semi dirty outdoor concrete cleaner bleach water 1 8 cup dishwashing detergent.
Use a stiff straw scrub brush or a floor buffing machine with the aggressive scrubbing pads.
Trisodium phosphate and water.
General concrete driveway maintenance tips.
Most stains on concrete floors can be removed quickly and easily but a lot depends on how old the stain is and how porous the concrete surface is.
The sooner you remove leaves oil and grease spills and other contaminants from your concrete.
Mop or rinse a couple of times with clean water.
For final cleaning you should do a good scrub down using t s p.
Get those unsightly grease oil and transmission fluid stains off your concrete driveway or garage floor.
Reapply sealer as needed.
The main thing is to not use any kind of acid wash or etching solution including muriatic acid to clean the slab.