Start with a strong detergent, then use an abrasive cleanser.
Sand, then scrub the area with the strong detergent mentioned earler.
Then wash it with a strong detergent and rinse thoroughly before repainting.
Scrub these clean individually, using a strong industrial detergent or driveway cleaner.
Then scrub the plaster with a strong detergent and hot water.
This prevents accidents with hot water and strong detergents used during the wash cycle.
Avoid strong detergents when you have a rash.
Then remove the plastic and scrub with a strong detergent.
A. Scrub the stains with a strong detergent and flush off.
You can use a strong detergent or even a scouring powder, not just a mild cleaner.