Get a cotton swab (or 2 or 20), and dab some Skin-So-Soft on it, and gently rub it over the glue. Press as you need to.
When you're finished, use warm, soapy dishwater (in a bucket) to 'rinse' the residue off. My best to ya and hope this helps.
Jay J -Moderator
PS: This method won't remove any paint that's been 'splashed' onto the windows.
PPS: God Bless America!
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