If the stairs are what were iced, get some of the grippie traction surface. You know, the stuff that is like sandpaper. Adhere it to the stairs. That might help a bit. Also, drill some holes every few inches to allow water to seep out.
Or, you could look into that barbed metal stuff (used on industrial type stairs). Add it on in the Winter, and take it off in the Spring.
:thumbup:
KillJoy