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VINEGAR must works.# b8 _7 C6 Q/ ~
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But you need some more conditions:
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1. the solution of the vinegar must be at least 5-6%, so it's better you buy a vinegar acid to add appropriate water.
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2. the temperature of the vinegar should be around 40-50 degree C.
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. \1 Q: ^( f6 [& U3. At least 1hr per day for around 1 or 2 monthes, you will be OK.
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" R8 U) O: d( _" u% d8 `good luck. |
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