用几桶漂白水(含氯,有消毒作用)从所有下水入口分别倒下去,看效果再汇报。
还有 liquid Plumber, 可以融化水管中的头发,布片等。可以先试试。
(要放大量热水)
one year.
The smell started ( I believe, not sure) when we went back to China for 3 weeks,no one use the house and sink. Then it comes out from time to time.
Strange, even my old home never really have this problem.
U shape pipe deep down in basement, rather than directly under sink.
1. 问 City 化粪池 (septic pond)离你的 lot 多远;
2。你房子出水防回流机构出问题了;
3。basement 中间有一个开放的下水口,不能让它干了。
4。建筑工人在水管中丢了物件。。。