My truck still had one and a half Chicago city parking stickers in the windshield from a prior owner. I've picked at them before but this weekend it just so happened that I had a gasket scraper and a can of pb blaster in my hands for another project when those ratty stickers caught my eye. The 95F heat made the stickers come out in three pieces but most of the adhesive remained on the glass and just laughed at the scraper. I soaked a corner of a paper towel with PB Blaster and rubbed it over the adhesive. After sitting for 30 seconds the adhesive wiped away easily. The pb blaster left only a light oil film which cleaned up easily with a little glass cleaner.
