It works!
Used this to clean up a used Aluminum boat trailer and I was shocked at how well it worked. I followed instructions for ratio of 15 parts water to 1 part cleaner and used a garden sprayer to get into the hard to reach places. Let it set for about 5 minutes and sprayed it off with a water hose. I did this 3X and the trailer looks really good. Don't allow it to dry or it will leave black dirt streaks, but when reapplied they will come off. Very easy. Very dirty spots may need to be scrubbed once applied. Get it, it works and very easy and quick to clean up a trailer.
Rating: 5 stars