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When to Clean vs. Replace Moldy Caulk in Your Bathroom

https://high-wiki.win/index.php/When_to_Clean_vs._Replace_Moldy_Caulk_in_Your_Bathroom

You notice black spots on your bathroom caulk. If it's just surface mold and the caulk is still flexible and adhered, scrubbing with bleach or vinegar might work. But if caulk is cracked, pulling away, or soft and porous with mold growing into it, replacement is needed. Old or extensively moldy caulk won't get fully clean and risks moisture damage behind it.