Lives up to the Hippocratic Oath - do no harm. Extremely effective on almost every kind of dirt. Clean and inoffensive smell.

It may not work on the very worst kind of dirt (like tar?), but you'd be wise to try this first before resorting to something more harsh.

I've used a lot of different cleaners on a lot of different things, but this is the only cleaner I use on my vehicles' interior surfaces and engine bay. Like they claim, the cleaner is effective but gentle enough for everything metal, plastic, rubber, and upholstery. Since all these things are found together in the interior and engine, it would be hard to keep any other cleaner away from materials it harms, but with this cleaner there is no fear.