Use a stiff-bristled grout brush or an old toothbrush to vigorously scrub the grout lines. Work in small sections, applying firm pressure to dislodge any grime, mildew, or discoloration. Pay extra attention to heavily stained areas.
Step 4 · Scrub the Grout
Use a stiff-bristled grout brush or an old toothbrush to vigorously scrub the grout lines. Work in small sections, applying firm pressure to dislodge any grime, mildew, or discoloration. Pay extra attention to heavily stained areas.
