Spray-On Car Wash KitWhile the idea of a waterless spray-on car wash is a great one, especially for situations where you can't use water, it isn't an ideal solution. It is below freezing in the winter here in Michigan, and I just cleaned the outside of my car with the Griot's solution and wiped it off. I found that I needed to use a lot more than 3 towels to cover the car and avoid smearing grit over the clearcoat. In addition, the Griot's car wash was starting to freeze before it dried. Even indoors, I noticed that the car wash did not dry very quickly.After wiping down the car exterior, it left the surface somewhat slick to the touch and with a coconut-like scent. However, it left smears and smudges all over the place. I had to buff it off with more clean microfiber towels. Honestly, if I had to go through all this trouble in the freezing temperatures, I'd rather just go through a car wash. That said, the Griot's car wash did cut through road salt quite well but it had a hard time on other grime like bugs, bird poop, and dried leaves.The saving graces in this kit include the microfiber towels, which feel a lot softer and finer than the typical microfiber towels I'd find in stores, and the wonderful sprayer and bottle. What I used to do in the past was pour in some car wash detergent in a spray bottle and mix with water. I'd use that for cleaning certain parts of a car in the summer. For instance, bird poop struck a part of the car. I'd use the sprayer and some paper towels to remove the acidic poop. I could see the Griot's Spray-on Car wash excelling in this department, but it would be far less expensive and just as effective to use a mix of water and car wash/wax detergent.As much as I like this kit and the Griot's brand, I honestly don't see the benefit to using this type of car wash kit. I'd recommend at least 5-6 towels at hand, and pray that none of them trap any grit that could scratch the clearcoat. My normal method of washing cars is using a bucket with a grit guard, chenille wash pad, and a hose of running water. The chenille cotton doesn't trap dirt at the surface of the nap and does a much better job of cleaning, while the grit guard ensures grit sinks to the bottom.Overall: 4/5 stars, not an ideal solution for washing cars. The sprayer and bottle are fantastic, and it is a great way to spot clean certain parts of the car. It is easy to use, but still freezes very easily in cold weather. Lots of towels are required for an entire car. I used half the bottle for just 4 door panels on my full-sized sedan.