08/14/2026
A customer recently came into our store and ordered 4 bags of soda ash weighing 50 pounds each. Normally we ask why does anyone need so much, in pools it’s used to raise Ph and no one should be that low. He said he was using it to kill black mold from the flood water that was inside his home. So I looked it up and yes it does. If you are having an issue with black mold we can get you up to 50 pounds at around 49 dollars a bag. How Soda Ash Kills Black Mold. Alkaline Spike: It raises the surface pH to a level most molds cannot tolerate. Dehydration: It draws moisture out of the fungal structure, drying it out. Residue Protection: The leftover powder film physically deters new airborne spores from settling. Step-by-Step Cleaning Method. For safe and effective application on hard or semi-porous surfaces:Mix the Solution: Dissolve 1 to 2 tablespoons of soda ash into a spray bottle filled with warm water.Apply Thoroughly: Spray the area heavily until it is completely saturated.Scrub and Wipe: Let it sit for 10–15 minutes, scrub the black mold off with a stiff brush, and wipe clean.Apply a Shield: Spray a light, final mist of the solution over the clean area and let it air dry to leave a protective barrier.