DIY Tub and Tile Cleaner
Vinegar works well on soap scum and mineral deposits, but rinse thoroughly, as it can corrode some fixtures and etch glaze on tiles. You can also try tea tree oil -- 2 drops tea tree oil with 1 cup water -- in a spray bottle. A natural antiseptic and fungicide, tea tree oil costs more than vinegar but will kill most types of mold and help prevent growth; as with all concentrated oils, it should be used with caution, as it can trigger allergic reactions if it comes into contact with skin. Pregnant women should consult a doctor before using it. You can also use the all-purpose cleaners recommended here.