10 Best Chemical Toilet Drain Unblocker Liquid Heavy Duty in The UK

Last updated on 16/07/2025

Advertising disclosure

Green Gobbler Drain Unblocker | Toilet Unblocker | Dissolve Hair & Organic Materials from Clogged Toilets, Sinks and Drains | Drain Cleaner and Opener, 128 oz

Free Shipping

Why We Love It

Efficiently dissolves common clog sources.
Multipurpose and septic-safe.
Assures 30-day money back.

Main Highlights

DISSOLVES HAIR, SOAP, TOILET PAPER & FLUSHABLE PERSONAL CARE WIPES: Forget the dirty work of plunging clogged toilets and end backed-up drains once and for all! The highly effective formula of Green Gobbler clears clogged drains and dissolves hair, toilet paper, flushable personal care wipes, soap scum and other organic matter that may be causing clogs within your pipes
MULTIPLE USES: This drain opener is safe to use in pipes, toilets, sinks, tubs, and showers and is safe for septic systems. Our formula Is non-corrosive to pipes and does not contain bleach or sodium hydroxide
MONEY BACK GUARENTEE: Green Gobbler offers a 30-day hassle-free money back guarantee. Simply contact our customer service team if you are unhappy with your results. Limit (1) item per customer

Green Gobbler Dissolve Tub, Sink & Drain Unblocker - Toilet Liquid Drain Cleaner & Hair Clog Remover Tool - 916ml

19% OffFree Shipping

Why We Love It

Hassle-free money back guarantee.
Rapidly dissolves hair, grease.
Effective and easy use.

Main Highlights

30 DAY HASSLE FREE MONEY BACK GUARANTEE – We value our customers and we stand behind ALL of our products 100% with no questions asked! If you are not pleased simply call or email us with your order number and we will reimburse you in FULL! QUICKLY DISSOLVE HAIR AND GREASE: Green Gobblers highly effective biodegradable formula liquifies grease, hair, paper, soap scum and other organic materials that are causing clogs.
WORKS WITHIN MINUTES: Unclog drains and liquify hair within minutes. This drain opener works in pipes, toilets, sinks, tubs, showers.
REVOLUTIONARY FORMULA: Highly effective biodegradable sink cleaner with rapid hair dissolve technology.
CLEAN AND MAINTAIN PIPES & DRAINS: The ultra-thick formula of Green Gobbler’s hair clog remover cleans and clings to pipes to keep them free-flowing and working.
EASY AND EFFECTIVE: The most effective way to open up drains and pipes and dissolve deep sitting clogs. Safer than sodium hydroxide and faster than most drain uncloggers on the market.

Eco Drain Cleaner from Plumbo - Safe and Effective Probiotic & Enzyme Formula for Mild to Moderate Blockages, Non-Toxic and Eco-Friendly, Breaks Down Grease and Organic Waste, Odour Neutralizer, 1 L

Free Shipping

Why We Love It

Cleans and deodorises effectively.
Eco-friendly and safe.
Powerfully effective results.

Main Highlights

OTHER DRAIN UNBLOCKERS promise to keep drains clear – but then wind up not working and MAKING BLOCKAGES WORSE. Plumbo Naturent Drain Cleaning gel is formulated with PROBIOTICS and 3 TYPES OF ENZYMES that “DIGEST” the waste, oils, fats, food residue, soap scum and TOILET TISSUE that accumulates in your drains on a daily basis, effectively BREAKING THEM DOWN and clearing them away.
DON’T SETTLE FOR drain cleaners that DON’T DO ANYTHING to improve the FOUL ODOURS in your pipes, or just DEODORISES or MASKING THE BAD ODOUR. Our drain sink unblocker effectively ELIMINATES offensive smells in pipes and drains AT THE SOURCE, keeping your SINKS SMELLING FRESH. Made for use in ALL TYPES OF PIPES and septic tanks – and SAFE for you, your family and aquatic life, too!
BETTER FOR THE PLANET – ECO FRIENDLY Made with NATURALLY OCCURRING ENZYMES and PROBIOTICS, this SUSTAINABLE drain cleaner break down waste and keep pipes and drains 100% clean WITHOUT harmful chemicals, NON-CORROSIVE AND BLEACH-FREE. Safe for use in ALL TYPES OF PIPES, toilets and septic tanks, also mobile toilets, caravan, boats etc.
150% more NATURALLY occurring ENZYMES and PROBIOTICS than most other biological drain cleaners. Breaks down and dissolves all organic waste, which can clog up or stagnate in drains and toilets, i.e grease, food residues, soaps, and toilet paper. To be used preventive to avoid clogging, and when flow or odour issues start to appear.
AT PLUMBO, WE’RE COMMITTED to providing you with POWERFULLY EFFECTIVE eco cleaning products that GET THE JOB DONE RIGHT. As a TRUSTED BRAND from Norway SINCE 1909, our kitchen, bath, and shower drain unblocker is a UNIQUE, NATURAL way to keep drains clear & fresh. WE PUT OUR CUSTOMERS FIRST – if for any reason you aren’t satisfied with your sink cleaner, our team is standing by to help.

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

Why We Love It

Unclogs sinks rapidly under 5 minutes.
Super-strength formula clears stubborn blockages.
Safely maintains all types of drains.

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.
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.
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 Drain Cleaner & Unblocker l 1KG Caustic Soda | Fast-Acting, Heavy-Duty Sink & Drain Cleaner | Strong & Effective | The Original & Best l Works 3x Better Than Bleach (Packaging Varies)

Why We Love It

Please provide a product description for me to generate the "Why we Love It" section.

Main Highlights

Drain cleaners and unblockers 1KG Caustic Soda Drain Cleaner Caustic Soda Powder Sink and Drain cleaner strong the original and best drain cleaner kitchen drain unblocker
Product type: DRAIN OPENER SUBSTANCE
Power unblocker to destroy the toughest clogs in your drain
3x stronger than bleach in removing hair-based clogs
Penetrates standing water to clear blocked drains quickly
Safe for all types of plumbing systems
Industrial Strength Formula, Fast Action
Brand : The Retail Heaven

Zep Commercial Unblocker Heat Drain Liquid

8% OffFree Shipping

Why We Love It

Melts blockages for easy drain.
Battles grease, fat effortlessly.
Safe for plastic components.

Main Highlights

Heavy duty formulations melts tough blockages
destroys grease, fat &amp
food build-up effortlessly
this professional-strength formula is safe for Plastic pimples
Destroys grease, fat & food build-up effortlessly
This professional-strength formula is safe for Plastic pimples

Knock Out New Drains/Toilets and Urinals, 1 Litre

Why We Love It

Safer than sulphuric acid unblockers.
Rapidly clears tough blockages.
Ideal for maintenance of drains.

Main Highlights

Powerful outside drain and toilet unblocked designed to be a safer alternative to sulphuric acid unblockers
Rapidly dissolves organic material to free up blockages
Boosted caustic liquid formula for easy application at the right strength for wide bore pipes and drains
Ideal to speed up slow draining plug holes and as a general maintenance to keep drains open

Strong Heavy Duty Industrial Sink & Drain Unblocker Cuts Through Standing Water Fast Effect 5 Litre Cleaner (1 x 5 Litre)

Why We Love It

Unclogs water in minutes.
Effective on various drains.
Safe for all pipes.

Main Highlights

5 Litre heavy duty industrial sink and drain unblocker is designed to cut through standing water that has been caused due to food being trapped in drain pipes or either a build up of hair stuck in showers. It effectively unclogs your sinks in just one dose and gets to work in less than 5 minutes so you can have running water again.
The powerful formula cuts through standing water, clogged toilets and sinks, this is a essential cleaning product used in most homes, offices, workplaces, canteens and shops.
Sink and drain unblocker can be used for sinks, showers, toilets, drains, outdoor drains it powers through to the source of the blockage to resolve the issue and give you free running water again.
We recommend you use this on a regular basis to ensure pipes and drains remain problem free, our solution is safe for use on all pipes and is very easy to use simply 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.

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

Free Shipping

Why We Love It

Powerfully tackles tough clogs.
Quick-action, efficient unblocking.
Safe for all pipes.

Main Highlights

Sink power unblocker to destroy the toughest clogs in your drain
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
Cuts through standing water to unblock plugholes
Mr Muscle drain unblocker is safe for use on all types of pipe

Mr Muscle Drain Unblocker, Sink & Drain Cleaner, Fast Acting Heavy Duty Gel Formula, Dissolves Clogs, Works 3x Better Than Bleach, Safe for All Pipes, Duo Pack (2 x 500ml)

30% OffFree Shipping

Why We Love It

Powerful sink clog solution.
Efficient blockage removal strength.
Safe for all pipes.

Main Highlights

Sink unblocker to destroy the toughest clogs in your drain
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
Cuts through standing water to unblock plugholes
Mr Muscle Drain Unblocker is safe for use on all types of pipes

8.7

Excellent

Save 30%

We scanned 319 products

We reviewed these offers relevant to the Chemical Toilet Drain Unblocker Liquid Heavy Duty within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Green Gobbler, PLUMBO, STORM TRADING GROUP, The Retail Heaven, Zep, Knock Out, Pluto Packaging, Mr Muscle, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Chemical Toilet Drain Unblocker Liquid Heavy Duty in the market, we considered we took a deep dive into 1596 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Green Gobbler Drain Unblocker | Toilet Unblocker | Dissolve Hair & Organic Materials from Clogged Toilets, Sinks and Drains | Drain Cleaner and Opener, 128 oz. We love many things about this product by Green Gobbler. What sets it apart from the competition is Efficiently dissolves common clog sources, Multipurpose and septic-safe. , Assures 30-day money back.
The best value product for most shoppers and where user satisfaction is continuously the highest is Green Gobbler Dissolve Tub, Sink & Drain Unblocker - Toilet Liquid Drain Cleaner & Hair Clog Remover Tool - 916ml by Green Gobbler based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Chemical Toilet Drain Unblocker Liquid Heavy Duty and the best cost-to-value ratio is Mr Muscle Drain Unblocker, Sink & Drain Cleaner, Fast Acting Heavy Duty Gel Formula, Dissolves Clogs, Works 3x Better Than Bleach, Safe for All Pipes, Duo Pack (2 x 500ml)at Mr Muscle with a 30% discount.
Our list of the best Chemical Toilet Drain Unblocker Liquid Heavy Duty is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Chemical Toilet Drain Unblocker Liquid Heavy Duty in The UK

Related Deals You Might Like for Chemical Toilet Drain Unblocker Liquid Heavy Duty

Knock Out New Drains/Toilets and Urinals, 500 ml

HG Drain and Plug Unblocker, Effectively Removes Blockages & Cleans Blocked Drains Fast, for Blocked Drain Pipes in Sinks or Shower Traps (1 Litre)

Drain Unblocker - 3 Doses Heavy Duty Gel Formula – Dissolves Hair, Grease & Waste – Odour Remover, Gentle on Pipes by Plumbo

Buster Bathroom Drain Unblocker 300ml, Pack of 3 – Sink Unblocker Removes Hair & Sludge in Showers, Baths & Sinks. Fast-Acting Shower Drain Unblocker Clears Blockages & Slow-Draining Water

Vamoosh Plughole Unblocker, Drain Unblocker Bathroom - Dissolves Hair, Bleach-Free Bathroom Sink Unclogger, Septic Tank Safe, Fast Acting, Safe & Powerful - 2 Doses (600ml)

Buster Kitchen Plughole Unblocker 150g, Pack of 2 - Kitchen Drains & Sinks Unblocker, Blasts Fat & Food Debris – Fast Acting Plughole Unclogger, Clears Blockages & Slow-Draining Water

STARWAX Super Powerful Drain Unblocker Gel – 30% Caustic Soda – Works in Standing Water – Fast 30 Min Action – Thick Formula – Kitchen & Bathroom – 1L = 2 Uses

HG Drain and Plug Hair Unblocker, Removes Hair from Showers, Baths, Sinks & Plug Holes, Unblocks Blocked Bathroom Pipes & Drains Quickly & Easily (200 ml + 250 ml) - 667045106

HG ECO Drain Unblocker, Kitchen Sink & Bathroom Sink Unblocker, Heavy Duty Drain Unblocker, Bath Traps & Waste Water Pipes, Eco Conscious HG Cleaning Products, Recyclable - 1000ml (681100106)

by Amazon Sink & Drain Unblocker, Powerful and Fast Acting Formula, 500ml

We scanned 319 products

We concluded that: