Most fridges now have auto-defrost, but they still need to be washed regularly. Here’s what to do.

• First, turn the fridge off.
• Remove shelves and drawers: wash in warm soapy water and rinse.
• Wipe inside surfaces with a solution of bicarbonate of soda (a tablespoon per litre of warm water), paying particular attention to door seals.
• Check the drainage hole inside at the back isn’t blocked. The defrost water drains into a trough, where it evaporates. If milk or meat juices get into it, it’ll smell. Pour down a solution of Milton Sterilising Fluid; dilute according to instructions, and use about 50ml. Gently prod a straw down a little way to clear blockages.
• If necessary, pull the fridge out and use the Milton to clean out any contaminated defrost water in the evaporator tray at the back.
• While you’re at it, wipe down the sides with soapy water and vacuum the condenser coil on the back with the soft brush attachment.

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