- - Q. See questions above. How about spreading salt on the ice of the entrance to the Shul or Home?
A. On question 2073 we wrote:
Q. Can one scatter salt or sand on the snow during Shabbos to prevent people from falling?
A. Poskim permit scattering salt and even sand on snow or ice, since the salt melts and there is no intention for the sand to stay, but rather to be washed out with the later defrosting and rain. Therefore there is no prohibition of boneh or building. Mishna Berura (313: 55, 320: 14). Shemiras Shabbos K. (25: n.49).
In regards to placing it on the street to prevent accidents, where there is no eruv. Shemiras Shabbos K. (25: 9) permits if it is not a Biblical reshus horabim.
Horav Shlomo Miller’s Shlit’a opinion is similar.
Rabbi A. Bartfeld as revised by, Horav Yaakov Hirschman Horav, Dovid Pam, Horav Aharon Miller, Horav Chanoch Ehrentreu and Horav Kalman Ochs Shlit’a