ice melt. NaCl, MgSO4, CaCl Answered
thought about running a chainsaw to remove ice from roof gutters. rethought that.
sodium chloride? corrode metal gutter and hurt plants.
mag sulfate? have it on hand, but above link indicates it wont work.
would it work if baked to drive off h2o? stuf comes hydrated.
calcium chloride? directly on metal?