Overview
- Experts say expensive specialty products are unnecessary because simple household remedies clean bathroom grout effectively.
- A paste of baking powder, natron, or soda mixed with water at roughly 3:1 is worked in with a toothbrush, with up to 60 minutes for baking powder or natron and a maximum of 30 minutes for soda.
- Household specialists advise choosing pure natron over baking powder, noting that starches in baking powder can feed mold in damp bathrooms.
- For routine upkeep, a soda spray made by dissolving about two tablespoons of soda in half a liter of water removes soap scum and limescale at very low cost.
- Coverage cautions against vinegar or citric acid because they attack grout, recommends careful use of very fine sandpaper for stubborn spots, and cites NDR guidance to replace mold-infested silicone seals.