2 minutes ago, Grusa said:

In UK and I think US they are called Dyno-Rod. We always called them Churn-o-<deleted>. Don't know if they exist here, but I have seen a municipality truck with similar equipment.

Yeah exactly! The same kit as the dynorod dude has in his Orange van back home. I didn’t know the machines had the same name - live and learn.

 

The guy had all the kit, him, his wife and daughter - living in the deep south, but came from Mukdahan.

 

Was a bit pricey mind, over 1000B per run, wouldnt do discount for a second job while he was on site, but the landlord paid - it’s one of the few times I used a professional service here and the guy was actually a professional. 

Did you check that maybe the septic tank / waste wate hole be full?

After so much rain in the last few days, the water can no longer or only poorly seep away.
 

Bicarbonate of soda, vinegar and boiling water works for me.

And so it would, but what about the drain?

Before buy professional products try with white vinegar.