Caustic soda, known chemically as , is a highly alkaline corrosive substance. It is the active ingredient in many heavy-duty drain cleaners, but buying it in pure crystal or flake form is significantly stronger and cheaper than pre-mixed liquids.
Evaluation of Caustic Soda (Sodium Hydroxide) as a Chemical Drain Unblocking Agent
A: Yes, but in moderation. A single treatment will not kill the beneficial bacteria in your septic tank, but frequent heavy use will upset the biological balance.
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