Let it settle for 5 10 minutes then scrub with a stiff brush and rinse it off with your garden hose at its highest pressure.
How to remove white fertilizer stains from concrete.
Purchase an acidic efflorescence stain remover available at hardware stores and home centers.
These methods will also remove a portion of the concrete so most people choose to use a wet method.
If you catch the stain early this might be all you need in addition to some sunshine odor can be further reduced by an application of distilled white vinegar.
This may sound weird but fertilizer really can leave rust stains on your pristine concrete.
These stains are caused by chemical fertilizer granules that are left on concrete surfaces.
Water causes the chemical pellets to basically soften on the concrete and therefore the properties inside the chemical will cause deep rust stains on top of and inside of the concrete.
For this article we will focus on a wet method.
Many consumer fertilizers today contain a small percentage of iron a mineral your lawn needs to stay healthy but which your concrete certainly doesn t.
First scrub the concrete stain with dish soap and water in order to remove as much urine as possible.
Rinse the concrete with water until you remove all the soap.
Let it sit for a few minutes.
Pour fresh lemon juice onto the stained area.
Occasionally white stains also appear from salts in the fertiliser.
Apply the vinegar and water solution to the stains several times.
Wet methods use chemicals to remove the stain.
Spray them with easy off no fume oven cleaner in the blue can.
Scrub the stain lightly and then rinse.
Given enough time acid rain can clean the majority of white concrete stains but many homeowners do not wish to wait to remove the problem.
The white residue on the surface of new concrete can be removed only with an acidic cleaner.
Decide if you want to use a dry method or a wet method.
Severe stains may require a second application.
Apply solution to fertilizer stains.
Use a clear white vinegar and dilute it 50 50 with water.
However the pet store products are most effective.
Removing the fertiliser stains without damaging the pavers is usually possible.
Get those unsightly grease oil and transmission fluid stains off your concrete driveway or garage floor.
Dry methods include scouring grinding or sandblasting away the stain.
How to remove fertilizer rust stains from concrete.
Scrub the stain between each application of the solution and see if the fertilizer stains are being removed.
Dilute clear white vinegar with water.