Homemade shower scrub

Mix 2 cups baking soda, 1/2 cup Castile liquid soap, 2/3 cup water, & 2tbsp. Vinegar in a bottle w/ a squirt cap. This is a good scrubbing paste for tubs, showers, sinks, & things that are ok w/ a mild scrub. Do not use on granite or marble. I get my liquid Castile soap at Trader Joe's for around $9 in a 32 oz. Bottle. That's the best price I have found.