Pour the lemon and salt solution into the detergent dispenser and run an empty washing machine at maximum temperature. You can also use the  salt individually  by pouring it into the tray instead of the detergent.

If you then want to use a product that contains the potential of all the ingredients together, you can prepare  your washing machine care  as follows: pour 100 grams of citric acid into 500 ml of distilled water and add 15 drops of  tea tree oil  . Shake carefully and use the product by pouring it into the detergent dispenser and performing a vacuum wash at a temperature of no less than 60 degrees.