Traci Overton said: “For grout and sealants I use a toothbrush dipped in bleach, though bleach is not advised on grout, never had an issue.”
Lavinia Blackman suggested: “Cotton wool balls soaked in bleach leave overnight if possible.”
Emma Scannell recommended: “Use kitchen paper, scrunch it lengthways all along the sealant, saturate with bleach until it stays stuck to the sealant and leave for at least an hour. Have a little check every so often.”
Lynda Coventry wrote: “I watched a programme recently and they used bleach. “Place a line along the mould and cover with cotton balls.
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