Winter frost can break a windshield if scraped aggressively; as a result of a de-icer

https://wiki-byte.win/index.php/Local_Laws_Regarding_Broken_Windshields_and_Safety_Compliance_In_North_Carolina

Winter frost can ruin a windshield if scraped aggressively; using a de-icer and mild gear facilitates shield the glass surface from scratching.