Bleach stains on your countertop can be difficult to remove. However, if you act fast using supplies from home, it's possible to remove the bleach stains. Even if stains are older or persistent, they can still be removed with a little extra effort and patience.
Mix talcum powder and hydrogen peroxide together to make a poultice that's the consistency of putty. Spread the poultice over the stain using a spatula. Apply the poultice to a thickness of 1/4 inch and spread it 1/2 inch past the outside of the stain.
Place a layer of plastic wrap over the poultice to completely cover it. Secure the plastic wrap to the counter top with masking tape. Leave the poultice to set for 24 hours.
Peel the tape off and remove the plastic wrap. Allow the poultice to remain on the counter top until it dries thoroughly. Dependent upon the thickness of the poultice, this may take a few hours or up to a day.
Scrape the poultice off gently using a plastic scraper. Wipe the area with a clean, damp sponge.
Mix equal parts of white vinegar and water. Dip your sponge in the mixture and wipe the counter area that was previously stained. Vinegar is safe to use for regular, everyday cleaning.