Caustic Soda For Outside Drains

This reaction works only on blockages. Caustic soda will not dissolve mineral deposits (limescale, rust) or inorganic debris (sand, gravel, plastic).

: Mix 1 liter of cold water with roughly 60g (about 3–4 tablespoons) of caustic soda flakes in a plastic bucket. Always add the soda to the water , never the other way around, to prevent a dangerous "spit back" reaction. caustic soda for outside drains