Is mold taking over your bathtub grout lines? It thrives in standing water from baths or showers, quickly spreading across bathroom joints.
Scrubbing with a sponge won't eliminate it—in fact, it risks damaging the sealant without deep cleaning.
Discover a reliable, straightforward solution using household bleach and cotton to restore your grout.

1. Grab a spool of cotton wool.
2. Place a basin inside the tub.
3. Pour a small amount of bleach into the basin.
4. Cut a piece of cotton.
5. Wear cleaning gloves and dip the cotton in the bleach.
6. Position the cotton over the moldy grout line.

7. Press firmly for good contact with the sealant.
8. Repeat as needed on other areas.
9. Let it sit overnight.
Incredible results: Your bathtub grout lines are clean and mold-free! No need to replace silicone seals—this saves time and hassle.
This deep-cleaning approach eliminates embedded mold and black spots effectively.
Now you have a go-to method for mold on silicone joints, without expensive anti-mold products.
It works wonders on shower grouts, tile joints, walls, and ceilings too, keeping your bathroom fresh for months.
Seeking a natural option? White vinegar often struggles with deep-set mold behind joints. For reliable results, bleach targets the fungus causing black discoloration from stagnant water.
As cleaning experts know, bleach kills mold spores on contact, whitening and sanitizing grout like new—guaranteed effectiveness.
Put this budget-friendly trick to the test on your bathroom grout. Share your success in the comments—we'd love to hear how it worked for you!