60 Count, Roof Melt Tablet, Designed To Prevent Damage To Roofs From Ice Dams, Made From Calcium Chloride, Easy To Use Simply Toss A Roof Melt Tablet On The Roof and Let It Do The Work, No Ladders Or Extension Equipment Needed, Proven Reliable and Inexpensive Products, Toss 1 Tablet On Every SQFT Of Problem Area, Begins Working The Hour After Applied To Problem Area, No Long Term Adverse Effects To The Roof Or Surrounding Area, Bucket.