Salt should never be used for the first winter on new concrete. Sand can be used to increase traction when needed. After the first winter, you can use de-icing salts or chemicals, but there are still risks. The de-icing salts can damage the surface of your concrete. There are no concrete safe products on the market despite what the marketing on the package says. For extra protection, you should apply a sealer to your concrete in the fall. The sealer helps prevent water and salt from entering the pores of the concrete. Be sure to use as little salt as possible, sweep the slush and salt off the concrete as soon as possible, and rinse the concrete when you can in the spring.
If I can't use salt... what should I do?
Clear the snow immediately before it gets walked on or driven, so it doesn't become hard-packed. Apply sand on slippery spots if needed. Bags of sand can be purchased at Menards, Home Depot, or Lowes. Most other hardware or landscape supply stores will have it in stock too.
It's also recommended to keep your garage floor clean and free of salt that drips off from your vehicle during the winter. A squeegee can be used to push large amounts of water and slush out of the garage, and a mop and bucket to clean up any residue.
Stay warm and safe, everyone!