Spray the glue with WD-40 and allow it to sit for 2 to 3 minutes. Scrape away the glue with a razor blade and use a soft clean dry cloth to wipe away any residual.
Cover the glue with peanut butter and use a hair dryer to heat it up. Once the peanut butter is hot, let it sit for 10 minutes before wiping it all away with a clean dry cloth or paper towel.
Saturate the glue with warm soapy water and allow it soak for at least five minutes before scraping it away with a razor. Rinse the area with clean water to remove any excess debris.
Heat a bowl of vinegar in the microwave or in a saucepan on the stove until it is hot. Apply the vinegar to the glue with a soft clean cloth and allow it to soak for at least five minutes before scraping it away with a scraper.
Apply isopropyl alcohol to the glue with a clean cloth. Allow it to soak for 2 to 3 minutes before scraping it away with a scraper.