Knock Out Professional Toilet and Drain Unblocker 1 Litre

• Reacts with water and blockage for fast action
• Industrial strength
• Unblocks outside drains and toilets
• 1 litre

Knock Out Professional Toilet and Drain Unblocker 1 litre is designed specifically for commercial use where toilets are used considerably more frequently and is just what you need when or if a blockage occurs.

Knock Out Toilet and Drain Unblocker is a sulfuric acid-based solution that helps eliminate organic-based obstructions quickly. Sulfuric acid is powerful enough to chew through large clogs fast, usually within an hour if the blockage is minor. Hair, soap, paper, waste matter, cooking fats, and other materials are broken down and dissolved by its chemical action.

Knock Out Toilet and Drain has about twice the density of water, so it sinks fast to the clogged area and begins to eat away at the blockage right away.

Please note that this product should not be used to unclog baths, urinals, showers, basins, or kitchen sinks.

Use between 250ml and 500ml for toilet treatments. Allow for 10-15 minutes of resting time. When the blockage is cleared, flush with cold water with great care.

For outside drain treatments, carefully pour our 250ml - 500ml of product into the drain, when the water level drops, the blockage is gone. If the obstruction is significant, the treatment may need to be repeated after an hour. When the obstruction is cleared, flush with cold water with due care.

Not for use with septic tanks, toilets with macerators, and waste disposals. All metal surfaces, vitreous enamel, aluminium, galvanised metal, plastic, and decorative surfaces should be avoided as well.

Take a look at our other toilet cleaners and other cleaning items here:

Toilet Cleaners

Cleaning

Delivery

Free delivery on all orders over £50 (ex vat) and up to 30kg. Applies to UK mainland (UK Mainland excl. Highlands and Islands) and items held in stock only.

Orders under £50 are charged at £6.95 +VAT for delivery. All orders are dispatched with a Fast Courier Service. 

All deliveries are kerb side only by our courier partners.

Please be aware that orders may come in separate deliveries from different locations within the Cooksmill fulfilment centres.

For all queries regarding deliveries or order updates, please get in touch.

Returning items purchased online

If you purchase a stock item online that you want to return then you can send it back to us within 28 days of the sale and we will refund the value of the items that we receive back in resaleable condition.

Special orders and orders of appliances may incur restocking charges from the manufacturer. This can be up to 30%.

If there was a picking error and you received incorrect items we will arrange for a replacement.

If you receive any damaged items please email us immediately. We require images of the broken item and the packaging within 48 hours of the goods being signed for to process your claim.