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Originally posted by chittesh

There is a liquid you get at Home Hardware for 7$. Its called CL. It has sulphuric acid in it and will burn through almost anything organic. I could actually smell it burining through all the food and smoke coming out of the drain and it cleaned the drain in 3 mins. Much better than drainex.
Try that before trying anything else.

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Please be careful with that. H2SO4 (Sulphuric acid) can burn the seals, metal cast pipes or plastic connections in your plumbing line and in the long run you might have pipe leakages. Also, chemicals containing Sulphuric acid need to be handled and stored very carefully since it is highly corrosive in nature.

Mechanical (snake) method are the most environment friendly and safest ways to clear the clogs.

Good luck.
Hiren