Naturally unblocks drains: beneficial microbes digest the fats, oils and organic matter that cause slow-running drains and blockages. Tackles odours at the source: breaks down the decaying organic matter that causes unpleasant smells, rather than simply masking them. Keeps working after you pour: living microbes continue working deep within your drainage system long after application. Helps prevent future build-up: regular use supports a healthy microbial community within your pipes, helping to keep them clear and free-flowing. No harsh chemicals: a natural, non-corrosive alternative to conventional drain cleaners that is kind to pipes, seals and septic systems. Septic tank friendly: supports the natural biological processes that break down organic waste within your septic system.