Soaking in the bathtub is a relaxing activity until the water drains out, leaving a dirty ring around the tub. Soap scum, bath products and oils collect at the water level while you bathe and cause this ring around the tub. Once the water drains out, the ring stays behind. Removing the ring keeps your tub clean and prevents further dirt and debris from collecting at the site of the ring. You can use home remedies to clean your bathtub and save yourself the expense and chemical exposure that comes with commercial bathtub cleaners.
Soak your nylon mesh sponge in a bowl of white vinegar. Get the sponge really wet and do not wring out the excess liquid.
Hold your vinegar-soaked sponge over the bathtub and sprinkle baking soda onto the sponge. Rub the baking soda and vinegar into the ring around your bathtub. Soak the sponge in the vinegar again and add more baking soda as needed.
Allow the baking soda and vinegar to remain on the surface of your bathtub for a few minutes. Dampen a clean cloth and wipe down the bathtub to remove the cleanser.
Tackle any remaining ring on your bathtub by wetting a cloth with hydrogen peroxide. Scrub the site of the stain with the peroxide then rinse it off with water.
Dry your bathtub's surface with a clean, dry cloth.
Substitute borax powder for baking soda to remove a dirty bathtub ring. Add 2 tbsp baking soda to your bath water to prevent a ring from forming when you drain the tub. Using bath oil in the tub leaves a greasy film on the surface that attracts dirt and stains. Apply oil to your skin after you get out of the tub instead.