Here is a full list of ingredients you will actually need:
- 1 – 1 1/4 cup hot water
- ¼ cup washing soda/sodium carbonate (or baking soda/sodium bicarbonate)
- 1/2 cup vodka
- 10 drops tea tree oil
- 5 drops of eucalyptus essential oil (optional)
- 5 drops lavender essential oil (optional)
- 5 drops of rosemary essential oil (optional)