Good morning guys.I work for a big dealership and we have this problem especially after the landscaping crew agitate and stir up the mulch. Well unfortunately my partner and I have solved the problem and it very simple.Spray the entire vehicle down with all-purpose let soak for couple of minutes...
Spray bumpers/all lower panels,including back of mirrors with all purpose then scrub with bug scrubber.what doesn't come clean laquer for tar or other solvent cleaner..