ASTM - 1 grade rock salt mined directly from the earth. Now dyed royal blue and treated with an anti-caking agent to avoid over application and hardening of products.
- ASTM-1 grade rock salt mined from the earth
- Unique blend of large and small sodium chloride crystals
- Small crystals provide quick melting capability and large crystals provide long lasting protection
- Dyed royal blue and treated with an anti-caking agent