Soak in lemon water: Fill a container with warm water and squeeze in plenty of fresh lemon juice (you can also put lemon slices in the water). Let the compartment soak in the mixture for about 20–30 minutes. The acidity of the lemon softens hardened detergent and limescale. Lemons
Brush stubborn spots: Use an old toothbrush to scrub the compartments, corners and edges of the compartment clean. You can sprinkle a little baking soda on the lemon for added mechanical cleaning power.
Rinse and dry: Rinse the compartment under clean running water and dry it before putting it back in place.
Clean the compartment opening: Also wipe the compartment opening inside the washing machine with a cloth dampened with lemon juice.
Tip for maintaining freshness
Leave the detergent compartment slightly ajar after each wash to allow moisture to evaporate and prevent mold from forming again.