A Car Wash in a Can promises quick, waterless cleaning with zero setup—but is it actually practical? After testing it on my car and around the house, here’s where it shines and where it doesn’t.

Waterless car washing is becoming more popular — but does it actually work? I tested Rubbit’s foaming wash system on a very dirty car to find out. Here’s what surprised me, what it does well, where it struggles, and whether it can really replace a traditional car wash.