Step 1 · Clear and Clean the Garage Floor

Completely empty the garage of vehicles, tools, storage items, and anything else stored on the floor. Sweep the entire floor surface to remove loose debris, dust, and dirt. Then, use a wet mop or a pressure washer to wash the floor, removing any grease, oil stains, or grime. For stubborn stains, use a degreaser or concrete cleaner and a stiff brush.