(4) 1 Gallon containers. COBRA Condenser Coil Cleaner is an alkaline-based, non-acid formula that with superior surfactant technology that easily dissolves and disperses grease. COBRA sprays through coils as a liquid. After 30 to 45 seconds, it begins to foam heavily, while simultaneously pushing the dirt, grease and oxides to the outer surface of the coil where they can be easily rinsed with water. COBRA does not atomize, there is no burning sensation to the user's hands and arms. Biodegradable, phosphate free and USDA authorized. VOC content is 0%. Reduced fuming and odorless. An excellent product for air conditioners, central cooling systems, refrigeration systems and auto air conditioners. For use in hotels/motels, homes, office buildings, air conditioner services, and auto repair services.