Use warm water, add appropriate amount of washing powder, soak for two or three minutes, then hold the dirty place, it is very embarrassing, (the key is in the æ’®)
You can also use gasoline. This method is more effective. Put a few detergent powders and a small amount of gasoline for a few minutes. It is very easy to wash, and it is very clean, just pay attention to safety.
You can also use a small amount of bleach, the effect is not bad...
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