I have used Shoe Grip Non-Slip Spray when I was a truck driver. it has saved my butt many a times...

The steps on my truck would get icy in the winter while sitting at truck stops. At -5 degrees, my bladder didn't care how cold it was outside. I had to go to the bathroom. I was watching a lot of truckers slipping and falling on the ice going into the convenience store and restaurant. Their "slip resistant" boots didn't seem to be working.

One day, I sprayed the Shoe Grip on the bottom of my boots, stepped outside and sure enough, I did not slip or fall on the ice at all. I strutted across the parking lot and back to the truck looking like a super hero! I keep a can in my car too. it is my hero in a can.