We may receive a commission on purchases made from links. Dish soap might seem great for washing cars. For starters, it's right there in your kitchen, and you don't need a lot of it to fill a bucket ...

Back in college, I worked one of my summers at a car wash. It was the ideal place for a teenager: I was in an unsupervised, dripping-wet cavern full of expensive Mercedes-Benzes and Land Rovers that I ...