Debouchnet - Drain and Gutter Unblocker Granules

Unblock & clean down-pipes, drains and gutters - granular formulation.

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Each £12·99 exc VAT
Total £12·99 exc VAT
Total £15·59 inc VAT

Debouchnet G attacks and breaks down all organic matter such as hair, grease, soap, limescale, paper etc without attacking enamel and pipe materials such as plastic.


You can add Debouchnet G either directly by pouring the granules into the pipe or by dissolving the granules to into water before pouring this solution into the pipe. For smaller pipes, such as sinks and showers, we recommend making a solution. For larger pipes such as exterior drains and down-pipes then adding the granules directly.

The amount to add depends upon the size of pipe or opening that is being treated. For a standard size sink, mix approximately 25g - 50g with a litre of warm water and pour slowly into the pipe opening. Leave to act for a minimum of 30-minutes (or overnight in very difficult cases) before rinsing thoroughly. If there is standing water, within the pipe, then try to remove as much water as possible before adding the solution. This solution can be make with a higher concentration of up to 100g if necessary.

For external blockages within larger pipes then Debouchnet can be added directly at an amount deemed necessary.

Do not mix with any other chemical solution.

Debouchnet G contains caustic soda - we strongly recommend that you wear protective clothing for hands, eyes and face. Keep away from children. Remove soiled clothing immediately.

How much should I add to my drain?

It is very hard to give an exact amount to add as it depends upon the type and size of the blockage. We recommend adding Debouchnet G slowly to a blockage rather than pouring huge amounts very quickly. The most important thing to remember is that the granules want to be in contact with the blockage so that they can start to break down the organic matter and dissolve the grease or soap build-up. This is why we suggest adding a small amount then topping up if necessary. However, if the blockage has resulted in water that is unable to drain then you will need to add a larger amount of granules as they will dissolve in the water and this will then start to break down the organic matter.