Where in San Francisco can I buy car soap and other car wash supplies?

AutoZone


PepBoys


Oreily's


Kragen


Walmart


Target


Kmart





need I go on??Where in San Francisco can I buy car soap and other car wash supplies?
Nothing works better or is gentler on the paint and wax than the cheap generic baby shampoos, not even the most expensive car wash shampoos. Guess what a 15 oz bottle of generic baby shampoo cost at the Dollar Store. Yep! It cost $1. And 5 ounces added to a 3 1/2 gallon pail of warm water will suds it up like crazy, as sudsy as the best car wash shampoos. That is 3 washes for ONE dollar! Do you think you can find a cheap generic brand of baby shampoo in a city the size of San Francisco?Where in San Francisco can I buy car soap and other car wash supplies?
seriously
walmart?