How to Decide If Moldy Caulk Should Be Cleaned or Replaced

https://thecleancorner.brightsora.com/posts/how-to-decide-if-moldy-caulk-should-be-cleaned-or-replaced

When you spot moldy caulk, first check if the mold is just surface-level or has penetrated deep. If it's only on the surface and the caulk is still flexible, you can clean it with a bleach solution. But if the caulk is cracked, peeling, or the mold has grown into it, replacement is the safer bet. Replacing ensures you remove all mold and restore a proper seal. Trust your eyes and touch—if the caulk feels compromised, swap it out.