yeah the 3m adhesive romover is probably as good as the goo gone, but nothing will make it wipe away like..let say milk. or, juice.
it will take many o minutes of scraping and such. I used credit card and the plastic square spatula, to get the gunk off from under my stock spoiler.
Use the goo gone and adhesive remover, let it soak, scrape, then repeat, repeat, reapeat.
then clay bar.