Use a liquid to remove all of the dust.
How to clean grouted floor dust.
I can mop my whole house with it and i m done.
Continue until you have removed all the ground in dirt.
You want to be vigours when you scrub to get all the ground in dirt loose.
Dilute 12 ounces of hydrogen peroxide in 1 gallon of water and use soft cotton rags to wipe the surfaces.
Liberally apply the cleaner to the grout allow it to sit for 5 10 minutes the longer the better but not until it dries out use your grout brush a scrubbing brush or old toothbrush to scrub the grout.
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Allow the floors walls and other surfaces to dry.
Continue to wipe grout dust from all surfaces until no dust remains.
The particles in concrete dust are very fine.
You must clean these surfaces before you clean the floor.
Dip a nylon scrub brush into the cleaning bucket and scrub off the residue working the baking soda into the buildup.
Simply vacuuming will not remove it all.