The lower the chloride content, the lower the risk.
SnoMelt S010BG 10 lbs Calcium Chloride Pellet Bag SpecificationsCapacity: 10 lbs. SnoMelt will not chemically or physically attack concrete. The application of SnoMelt results in the lowest accumulation of chloride compared to other commercial deicer products.Calcium Chloride Pellet Bag Any deicer may be harmful to vegetation, but when used as directed, SnoMelt will not damage trees, shrubs, flower beds or grass.