Navi Man said:Intel486,
I'm not sure what the chemical make up of either product is, but solvents in themselves aren't harmful to the paint if properly used. Typically these products will contain some mineral spirits and an aromatic solvent such as Aromatic 100. Neither of these products I mentioned will harm cured paint and especially factory finishes. It will strip off all the wax though and a good application of wax will be necessary to restore the gloss and protection.
Yes, be used or misused...
Even turpentine (recommended by two detailers that work on cars that are $$$$$$$$$$$) can be "useful" for sap removal (if used carefully and when needed).
http://www.autoint.com/ford_tree_sap_removal__there_are.htm