Those of you who use something other than rock salt or a salt/sand mixture - what are you using? Is it less expensive in the long run since I'm guessing you don't have to apply as much material? Or is it more costly but justifiably so since it's more effective than salt/sand? We use #1 rock salt exclusively and may go to a salt/sand mixture next season. We treat only commercial lots and don't have any sidewalks to worry about.