It's kind of shiny, and you would expect it to be sticky, but it's not. I've tried multiple cleaners, to no avail...any suggestions?

 

Have you tried Amazing Rolloff? Spray the entire area with the full concentrated formula, do not dilute. Then let it set for about 3-5 minutes but don't let it dry. Then hose off with water. This should remove it.

Conrad Gibbons
Eleanor_01
01 Black on Black #004225