Since my post this morning I used it on my bed liner.
I did the part that laps out over the top bed rail I have a tonneau cover so the rest of it don't show so just soap and water is all I use on it.
The trim restore worked very well on the bed liner but it does nothing to the trim on the bumper.
I had another product on the bumper but it has been a long time since it was applied so I don't know if that is a problem.
I think tomorrow I will clean the bumper trim and try the trim restore again.
I ordered three gallons of S&W and a gallon of S&G so I bought the trim restore to try.
If I don't manage to get good results on the bumper I will use it on all the rest because I like the looks after applying it.