18---2 Ounce Bottles of Red's Battery Cleaner Fizzes on Acid Contact Enough to clean 18 Batteries (3 Golf Carts) Enough to clean 36 Volt Forklift Directions for Use When the top of a battery is ?dirty? or looks damp, it is ready for a general cleaning. It could be as often as every two weeks or as infrequent as every six months, depending on the battery?s environment and the care it receives. The average battery needs a general cleaning every three months. To give a battery good cleaning apply the solution with the squeeze bottles and a clean paint brush to the top of the batteries. Working it under the connectors and the terminals to loosen the grime and neutralize the acid. Apply the mixture until the ?fizzing? action stops. Then rinse the battery with clear water from a low pressure hose to remove all traces of the solution and loose dirt. DURING ANY CLEANING, BUT PARTICULARLY WHEN USING A LIQUID SOLUTION, MAKE CERTAIN THAT ALL VENT CAPS ARE TIGHTLY IN PLACE. Free Shipping to all US States And Territories Free Shipping To All US States And Territories