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5 Best Drain Unblocker Liquids of 2026

Last Updated - 28/05/2026

1
Best Choice

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

HG

2 x Liquid Drain Unblocker 1L - Unblocks Your Drain Within 30 Minutes

HG

£16.62

More Details
Main highlights
- Old Name: HG Liquid Drain Unblocker
- New Name: HG Drain and Plug Unblocker
- *Packaging May Vary* HG have updated their product labels, the contents remain exactly the same. The name has changed on selected product lines
£16.62
2
Best Value
13% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

STORM TRADING GROUP
13% Off

5 Litre Heavy Duty Sink & Drain Unblocker Strong Cleaning Liquid Plug Hole Toilet Cleaner Tool For Home, Office, Garage & Shops (1 x 5 Litre)

STORM TRADING GROUP

£12.99

£14.99
(13% Off)

More Details
Main highlights
- SINK & DRAIN UNBLOCKER: However much you try, sometimes food, hair or other blockages might fall down your sink or drains. Luckily, our sink and drain unblocker will help you get those clogs shifted. Soon you’ll be able to take a shower without it filling up with water or wash up in your kitchen sink without the dirty water getting stuck. Our Sink and Drain unblocker is the fast and effective way to unclog your sinks and drains with one dose. Gets to work really fast in under 5 minutes.
- SIMPLE TO USE: Add 1 Litre of product to the affected sink or drain and allow the solution to work for at least 5 minutes. For best results, leave for up to 30 minutes and then flush through with hot water. Simple select the amount required from the menu above.
- POWERFUL FORMULA: Power through blockages in your drain with our super-strength drain unblocker solution. It's a home essential and can be used on sinks, showers, and outdoor drains. It powers through to the source of the blockage to resolve the issue and give you free running water again. Use regularly to ensure pipes and drains remain problem free.
- MULTI USE: Protect your sinks and drains by using this drain unblocker on a regular basis. Out solution is safe for use on all pipes, its perfect for the home, office, workplace, shops and canteens.
£12.99
£14.99 (13% Off)
3

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Mr Muscle

Mr Muscle Drain Unblocker Liquid (2 x 1L), Sink & Drain Cleaner, Strong & Fast Acting Heavy Duty Gel Formula, Dissolves Clogs, Works 3x Better Than Bleach, Safe for All Pipes

Mr Muscle

£7.50

More Details
Main highlights
- Sink power unblocker to destroy the toughest clogs in your drain
- Mr Muscle drain unblocker is safe for use on all types of pipes
- Cuts through standing water to unblock plugholes
- Blocked drain cleaner for dissolving clogs caused by debris in sinks, plugholes and pipes
- 3x more effective than bleach as a pipe unblocker based on hair removal in laboratory testing
- 1L Twin Pack provides up to 4 doses, with each dose typically using 500ml for effective drain unblocking
£7.50
4

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

HG

HG Kitchen Drain Unblocker | Clears Blocked Sinks | 1L

HG

£7.00

More Details
Main highlights
- Quick and easy plughole unblocker: High strength blockage remover gel which gets to work eating away at the blockage. Try this first before calling a plumber! Gentle on sinks, pipes and traps
- Includes: 1 x HG Plughole Unblocker, 1L. Discover the full range of HG professional household cleaning products, with HG Mould Remover, toilet unblocker, shower drain unblocker and all surface cleaner
- HG Drain Unblocker for kitchen sinks: A fast acting drain unblocker and kitchen sink cleaner. Clears the pipes quickly and easily; ideal for persistent blockages caused by fat, oil and food remnants
- Eco conscious formula: The kitchen sink unblocker is made using natural ingredients, including enzymes and microbes, making this cleaner biodegradable and safe for any kitchen drain or septic tank
- Easy to use drain cleaner fluid: Can also be used as a sink drain cleaner and de-odouriser. Enhances the bacteria culture of septic tanks and has a preventative effect to help avoid future blockages
£7.00
5

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

MultiWare

MultiWare 5 Litre Drain Unblocker | Heavy Duty Sink & Drain Cleaner for Plug Holes, Toilets, Showers & Pipes | Powerful Toilet & Sink Unblocker for Home, Office, Garage & Shops | Cleaning Supplies

MultiWare

£12.75

More Details
Main highlights
- VERSATILE APPLICATIONS - Not just for kitchen sinks, MultiWare's Drain Unblocker is also effective in bathrooms, on shower drains, and even outdoor drains exposed to leaves and debris. Its versatility makes it a must-have in any home or commercial setting to tackle a variety of blockage issues.
- SAFE FOR ALL PIPES - MultiWare Sink and Drain Unblocker is thoughtfully formulated to be safe for use in all plumbing systems. Whether your home uses modern PVC, traditional copper, or older metal piping, you can trust our product to clear clogs without causing any damage or corrosion.
- RAPID RESULTS - Get quick results when time is of the essence. Our unblocker works within minutes to remove obstructions and restore optimal flow to slow drains, saving you both time and frustration. Simply follow the easy instructions for immediate relief.
- MULTIWARE POWERFUL DRAIN UNBLOCKER - Experience the strength of MultiWare's industrial-grade formula, specifically engineered to dissolve stubborn clogs quickly and efficiently. This powerful cleaner tackles everything from hair and soap scum to grease and food particles, ensuring your drains are free-flowing and clean.
- EASY TO USE - Avoid expensive plumber calls with MultiWare's easy-to-use drain solution. Our clear, step-by-step guide allows anyone to professionally handle drain maintenance. Just pour the recommended amount into the drain, wait for the formula to work its magic, and rinse away the residues.
£12.75

5 Best Drain Unblocker Liquids of 2026

2 x Liquid Drain Unblocker 1L - Unblocks Your Drain Within 30 Minutes

5 Litre Heavy Duty Sink & Drain Unblocker Strong Cleaning Liquid Plug Hole Toilet Cleaner Tool For Home, Office, Garage & Shops (1 x 5 Litre)

Mr Muscle Drain Unblocker Liquid (2 x 1L), Sink & Drain Cleaner, Strong & Fast Acting Heavy Duty Gel Formula, Dissolves Clogs, Works 3x Better Than Bleach, Safe for All Pipes

HG Kitchen Drain Unblocker | Clears Blocked Sinks | 1L

MultiWare 5 Litre Drain Unblocker | Heavy Duty Sink & Drain Cleaner for Plug Holes, Toilets, Showers & Pipes | Powerful Toilet & Sink Unblocker for Home, Office, Garage & Shops | Cleaning Supplies

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