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There is no other way to find a professional person to dredge the sewage pipe.
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Open the sewer, find the reason, which section is blocked, and do prevention after the drain.
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Try it yourself, but you can't find a dredging company again.
It's blocked, and no matter how you poke it, it's all in vain. Who knows what the blockage is, the only way is to break the pipe to dredge, reinstall the pipe with a small arc of the elbow, and be sure to install a filter screen at the pipe inlet.
Not your home. I can only poke it layer by layer. It is recommended that several households jointly find a professional dredge to repair it, and it should be a hard object in the pipe on the first floor of the downstairs. It doesn't get very clear, and the water fills up to your floor or higher until it overflows!
You must be clogged pipes caused by grease!
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It is to use a wet rag to roll into a roll to plug the floor drain first, and then use an air pump to pump the air from the dishwasher.
The most economical, the most economical, the most convenient, you can do it yourself in 5 minutes. >>>More