Disposal emits a persistent bad odour even after running with water.

Safety first: Turn off power at the switch.

• Clean splash guard: Remove the McAlpine rubber splash guard (if removable) and scrub both sides with hot soapy water. Replace if cracked or heavily stained.
• Deodorise chamber: Pour a mixture of baking soda and vinegar into the disposal, let it foam for 10–15 minutes, then flush with hot water while running the unit.
• Grind ice and citrus: Run a handful of ice cubes and small citrus peels through the disposal with cold water to help scour the chamber.
• Clean trap: If odour persists, remove and clean the McAlpine trap and nearby pipework.