Combine Sal Suds and vinegar in a glass liquid measuring cup. Gently stir.
Add essential oil of your choosing. Stir. See post for some great essential oil options. (While you can add up to 18 drops, this would be excessive. I would go with 5-6 total drops.)
Pour the mixture into a dish wand.
Wet the shower walls and floor with warm water. Scrub everything down with the solution-filled dish wand and rinse with warm water.