Found this solution to slick sidewalks that might be just in time!
Instead of ice melt or other salt solutions, spread ground corn on ice and snow covered walkways to make the surfaces safe and easy to walk on without damaging the concrete or killing the surrounding foliage.
It's also less expensive, readily available, pet-friendly, and feeds the birds and squirrels when snow is on the ground. (This was a suggestion by William Schweltzer of DePue, Illinois.)
Might just be the suggestion of the winter for managing slippery walks and just in time! For those of you who do not produce your own corn, ground corn can be found at farm stores, ususally in the bird feed section.