Madi, in our Northern climes, a mixture of salt (not the table kind) and sand are put on the roads as salt helps to melt the ice. It also causes tremendous rust on vehicles, and in some areas the ratio of salt to sand is changing, so there is more sand (for traction) and less salt, which damages roads and cars. I dislike the salt on the roads, and I won't use it on my driveway or walkways. It's also harmful for the environment.
Sorry for stealing the thread for a moment....
Abby and Emily do look like they are having fun. If you are in Western New York, I am assuming you aren't too far from me and that you are having the same amounts of snow and cold. I'm in London, Ontario about 3 hours from Buffalo.
At least the dogs (and children) love it!