The Windshield De-Icer is made from a concentrated high performance ice-melting formula that melts ice fast and helps reduce dangerous refreeze. Convenient ice scraper top helps clear icy windshields fast. Methanol is considered the most effective alcohol for melting ice. The high methanol content in Prestone Windshield De-Icer ensures strong ice melting power. Prestone"s uniquely designed micro edge ice scraper can withstand tough use. The polycarbonate blade is stronger than conventional plastics found in many scrapers.