Q&A for How to Remove Mold from Caulk

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Question

The grout in my tub has mold, how do I get rid of the mold behind the grout?

Debra Bish

Community Answer

The mold on grout and caulking can be removed with salt and vinegar. If that doesn't work, rinse well, and try a bleach and water solution - use about a cup of bleach in a gallon of water. Be sure you're wearing rubber gloves and protective eye goggles. Scrub the grout with a scrub brush using the bleach and water.

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Question

Will removing black caulking around tub harm my cat after it's off?

Community Answer

It could. You should always clean up the area thoroughly once you're finished and dispose of the garbage where pets and kids can't reach it.

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Question

I need to clean/whiten caulk that's been blackened by mold. I can't use bleach or ammonia. Would hydrogen peroxide or white vinegar be effective?

Community Answer

Make a paste of hydrogen peroxide and baking soda. Let it sit for 10 minutes and then scrub with a brush. Wash clean with a wet cloth.

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Question

What should I do if the mould is behind the caulking?

Community Answer

Remove the caulking, use a razor blade to make a cut in the material and remove all caulk with mould. Clean the area with hydrogen peroxide or vinegar to remove all remnants of mould, let it dry and install new mould proof caulking.

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