Cleaning bathroom grout - list shows the best home remedies for black stains. Baking powder toothpaste soda Vinegar essence toothbrush.
The vinegar kills the mold spores while the bleach lightens the black discoloration of the grout lines. The toothpaste is simply applied to the toothbrush and used to scrub the joints. With all methods, the joints and tiles are ultimately rubbed dry with a cloth. It is best to replace the cleaning sponge or cloth with a special joint cleaning brush from a specialist store or an old tooth brush.