Add castile soap, sodium bicarbonate and sea salt to a bucket
Fill the bucket with 7 litres of hot tap water
Stir/whisk to combine ingredients
Pour combined mix into smaller bottles or jars
Add preferred combination of essential oils to each bottle or jar. I usually add 12-20 drops per 800ml
Shake before each use. You will need between ¼ - ½ cup for each wash depending on load size and dirtiness