Janet Yarker wrote: “Soak mine in a big tub of washing powder. All the gunk just falls off.”
Debbi Walcott Love replied: “Soak in laundry detergent overnight.”
ASDA Smart Price Washing Powder 45 Washes costs £2.20.
Surf Tropical Lily & Ylang-Ylang Laundry Powder is £5 from Waitrose.
Daz Washing Powder For Whites & Colours costs £4 from Wilko.
Other suggestions from Mrs Hinch fans include using dishwasher tablets, sandpaper and soda crystals.