I know I saw a thread on here last year where Tryg mentioned that some samples of Goo that he had on either plastic or vinyl were getting sticky.
Ken replied that the Goo and the substrate had reacted.
I can't find that thread now, but I've seen people mentioning the use of goo on plastic, vinyl, plexiglass, etc. a lot recently. I was just trying to see what the circumstances were for the adverse reaction.
If you guys are better at searching than me and can find it, or if Tryg or Ken remember the specifics I would appreciate it.