Get calls for this most springs, also had them pulling seals around wing mirrors off after seeing there reflections. Had a job afew years ago for the highway traffic cops at there depot on the m1, they had 6 patrol vehicles, a pair of carrions ripped the wiper blades off 4 of them. I tried bird gel on a guys window they were pecking, that didn't work either. Larsons or air rifle is the best bet.