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Feb 6, 2022
4
2
3
London
Member Type
DIY or Homeowner
Hi,

I have an open drain in my garden which is actually the waste water coming from the upstairs flat's sink and washing machine (see attached photo). It will block once a year or so due to the fat and food material that gathers. I can usually unblock it myself but it's a bit of a pain, so I wondered if there is any type of fluid or crystals I could put down there on a regular basis to prevent the build up. I was thinking something like Drain Magic from TM Chemicals.

Any suggestions?

Thanks, Luke
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