Calcium Chloride currently holds the record for melting ice at the coldest temperatures. While potassium chloride can melt ice down to approximately -13Â°F (-25Â°C) and rock salt down to -10Â°F (-23.3Â°C), Calcium Chloride can melt down to -25Â°F(-31.7Â°C). This makes Calcium Chloride ice melt the most effective ice melter during harsh winter conditions and heavy snowstorms.
If damage is caused by fair wear and tear, a landlord cannot reasonably charge this to the tenant. Of course, fair wear and tear does not include intentional or careless damage caused by the tenant or their guests at any time during their tenancy.
RCW 59.18.310 states that the landlord can continue to charge you rent until the unit is re-rented, and that they can charge you for advertising costs. If they end up having to rent the unit at less than what your lease required you to pay, they can collect the difference for the full term of the lease.