The silicone sealant (from a gun) behind the kitchen sink (sealing the worksurface to the wall tiles) has several spots of mould where I have been a bit lax with the cleaning. Anything I've tried will not shift the mould stains. The mould seems to have ingressed into the sealant. Is there any modern product I could try? Or is this a case of redoing the sealant strip in due course? I looked in Tesco, but they had no mould remover of any kind.
MM