Cleaning Fool said:
You're correct. DuPont Bumper and Trim Black is paint.
I think what people tend to forget (often) is that a product's general claim about longevity/durability is completely dependent on the environment. If your car is parked outside and you live in the Seattle, you're going to have a different experience with a product than someone who lives in Austin and parks their car in a garage. I can't count how many times one person has claimed 6 months of protection while another argues they only got 3 weeks and all the variables that could account for the difference are completely ignored.
Beyond just the environment, trim composition will vary as will people's wash frequency, methods and products used. Even with everything being equal, varying the dilution ratio of the soap used will affect a product's durability.
I would recommend you give the products you already have on hand a few more applications before you you move on to something else. Many people have had good things to say about these products. Question them for tips on how to get a similar performance. An adjustment or two in your application may make a huge difference. If it still doesn't work out, I'm sure you won't have any problem trading or selling what you have left.
The old adage YMMV (your mileage may vary) is always a good thing to keep mind when trying new products.
