Wish I saw this sooner.

Product
Best For
Temperature Limit
Pros
Cons
Calcium Chloride
Concrete, pets, eco-safety
Works down to -25°F (-32°C)
Fast-acting, less damaging to concrete, lower toxicity
More expensive
Magnesium Chloride
Pet-safe areas, asphalt
Works down to 0°F (-18°C)
Gentler on paws, plants, and concrete
Moderate cost
Rock Salt (Sodium Chloride)
Budget option
Only works above 15°F (-9°C)
Cheap and widely available
Harsh on concrete, toxic to pets/plants
Potassium Chloride
Eco-conscious use
Works above 25°F (-4°C)
Plant-friendly
Less effective, can irritate pet paws
✅ Best overall choice: Calcium chloride—effective, safer for surfaces, and less toxic.