On the dash, I would use a steamer.
That should do it, but if not my second line of defense would be a product called rapid remover. You'll have to get it at a sign supply store.
Sometimes rubbing alcohol works on adhesive and it usually will not damage the substrate underneath. It's not very agressive and takes some time. perhaps place a sock (or something similar) over the spot soaked in rubbing alcohol. Give it some time to break down the adhesive and see if you have any luck.
+1 on rubbing alcohol. If you can get it, the 99% isopropyl stuff is best for goo removal (vs. the normal 70%).
2006 Chrome Orange Elise: LSD/TC, Nitron SAs with 425/650 springs, BWR 7/8" ("Hardcore") Front Bar, Eliseparts bumpsteer kit, VF Stage 2, 2bular Header + Sport Cat + 8x24 GT3 Muffler, ECU Tune by Jermaine, Smaay's fuel rail, ACT XT clutch, Saikou Michi dual catch can, Moroso pan, Manly's mount inserts & FF Engine Damper
2000 Black Integra Type R - DD: 231,000 miles!