Preparation tools: baking soda, warm water, detergent and long-handled brush.

Treatment method:

Step 1: Take a container that can hold an oil bottle and add a proper amount of baking soda.

Step 2: Pour warm water, dissolve baking soda and stir well.

Step 3: Soak the oil bottle in warm water for about 10 minute.

Step 4: Dip a long-handled brush with a proper amount of detergent to clean the inside of the bottle.

Step 5: After washing, the grease in the oil bottle will be cleaned.