Despite its effectiveness muriatic acid should be used on concrete stains only if you ve tried gentler alternatives to no avail.
Cleaning oil from concrete with muriatic acid.
Mold rust and other stains can mar the clean beauty of your concrete lessening the visual impact and even the curb appeal of your property.
Use it only as a last resort to clean stains.
The surface becomes etched and clean which allows for the proper adhesion of a new coating.
Mixing ammonia with bleach creates a lethal gas similar to mustard gas.
The acid works well on concrete and on many masonry projects because it neutralizes alkalinity.
It cleans concrete by removing the topmost layer of your driveway.
Before washing your driveway with muriatic acid try a degreaser on oil stains and a solution of one part bleach to three parts water on mold and mildew.
Make sure the detergent you use is ammonia free.