In a mixing bowl, combine baking soda and salt.

Pour in liquid soap, stirring until the consistency looks like frosting.

Add essential oils and stir.

Use immediately. Scoop the mixture onto a sponge and scrub tubs, sinks or other porcelain items. Rinse.

Alternate: Combine baking soda, salt and essential oil without liquid soap. Transfer dry mixture to a jar. To use, sprinkle mixture on bathtub surface and scrub with a wet sponge or washcloth, then rinse.