Basically, according to the ratio of 1 liter of water (hot water of 40-60 degrees) and 1 spoon (10g), the "active oxygen bubble" and the items to be washed are soaked, and the stains will automatically decompose. The higher the water temperature, the better. If the stain is thick, it can be used by raising the water temperature (boiling water is usually used for range hoods), increasing the concentration (500ML 1 spoon) and extending the soaking time.