It’s still messy out today, but that doesn’t mean you have to track the slush past your doorstep. Ideally, leave shoes in your entryway off the carpet. Investing in a boot tray for inside your apartment is a great way to keep the carpet or tile clean. A cheap DIY hack: put wet footwear on a cookie sheet to catch the runoff from the snow.
If it’s already too late, the best way to clean salty carpets is by vacuum, and wipe other types of floors down with a damp cloth (tile is the most impervious). You can do the same for your shoes, which can also be ruined by certain types of salt.