Perfect to make toilet fizzles:
1.5 cups bicarbonate of soda
0.5 cup citric acid
1tsp water
15drops lavender, peppermint and lemon essential oils
Wear gloves. Mix the baking soda and citric acid in a small bowl. Add approximately 1 tap water and essential oils. Pack firmly into ice cube trays. Allow to dry for several hours. Remove gently and store in an airtight jar.