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What this actually means is that we are pouring caustic soda

What this actually means is that we are pouring caustic soda (sodium hydroxide) or sulphuric acid into our waterways, both of which are highly corrosive chemicals anyone who has ever been splashed with drain cleaner can understand how it acts to clear the blockage what effect it has once in the sewer is less clear sodium hydroxide, a strong alkali, reacts with a greasy blockage to form a soap helping it to flush away some environmental agencies around the world do not classify sodium hydroxide as.

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