Amazon has a wide selection of bulk rock salt, magnesium chloride, and pet-friendly de-icers.
Target carries pet-safe and salt-free options in various sizes. where can i buy salt to melt ice
Lowe's and The Home Depot carry bulk bags and specialty de-icers like calcium chloride. Amazon has a wide selection of bulk rock
: The most affordable and common choice, effective down to roughly 15°F (-9°C). effective down to roughly 15°F (-9°C).