Used the cannon today as Amazon delivered it at 7:15 this morning. Man, that thing can create some suds, even with our terrible quality water. Followed their directions to use on a dry car, let it soak for a bit and then used the pressure washer clean water setting to rinse it down. Our cars don't get really dirty in the southwest - no mud, salt, tree sap, etc.. and so it's usually just dust that has accumulated so it handled that with ease. Even did a decent job in the wheels where we do get the same brake dust as everywhere else. Impressive little piece of equipment for $14.