Use vinegar plus baking soda, mix with water. Pour into those drains before sleep. Do it several days in a row. if still not working, you might have to call someone to water jet entir drainage.
Those are probably drain fly
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• 谢谢! 这种是怎么引起的? 以前没有的 -新年2012- ♀ (0 bytes) () 09/12/2023 postreply 13:55:22