so i don't have a garage to park in where i live right now, just an offstreet spot under a messy tree that drops all kinds of sap or sticky covered pods. i flicked off as many as i could but eventually, there were some that had stuck around on my black car in the sun for the better part of a week. 80mph for 2 hrs daily didn't budge 'em. pressure washing, scrub sponges - nothing budged these. i knew i needed something but i wasn't sure what. this stuff came highly recommended: and i give it because it did a lot more than anything else i'd tried so far, but holy crap did it take some elbow grease and a long time. i used over half the bottle just to get about 8 of these sap spots off my hood - and there was still the whole car left to do. at this point i about gave up, because i'd read on the interwebs that once it chrystalizes, you have to sand it off and repaint. but last night i tried one more thing and it worked like crazy, earning and yeah, a 99 cent bottle of rubbing alcohol (40%) and a bag of cotton balls did the whole car in an hour. i bet if i coulda found a more concentrated bottle it woulda gone faster too. you should be warned though - this may not be the best thing for your car's finish - mine was already swirled up from before i bought it so i didn't mind a few more swirls, and i waxed my car immediately afterwards. but if you want sticky tree crap off your car, this gets my vote.