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

Last updated on 07/08/2025

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Luigi's World's Best Toilet Plunger - Plunger Toilet Unblocker Heavy Duty - Plungers for Unblocking - Unique Strongest Unblocker Tool - Plungers for Unblocking - Clog Remover Tool

25% OffFree Shipping

Why We Love It

Secure grip for confident use.
Powerfully breaks up deep blockages.
Generates 8x more plunger force.

Main Highlights

Powerful Water-Driven Unclogging: This plunger uses water pressure instead of air to clear blockages, eliminating clogs without a seal. It works on all toilet types, including low-flow and elongated designs.
Specifically Designed For Toilets: Featuring a narrow nozzle, this plunger targets toilet clogs directly. No perfect seal is needed, ensuring 100% effectiveness on even the toughest blockages.
Effortless Cleaning And Storage: Add bleach to the toilet and plunge clean water to clear residue. The detachable handle makes it easy to store in small cupboards or tight bathroom spaces.
Heavy-Duty Performance For Tough Clogs: With eight times the force of standard plungers, this tool easily clears wet wipes, kids’ toys, and stubborn blockages without extra effort.
Universal Fit For All Toilets: No need to worry about your toilet's shape—this plunger works on low-flow, square, elongated, and modern toilets, delivering powerful results every time.

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

6% 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.

Max Strength Drain Unblocker, 1L, Heavy Duty Toilet Unblocker, Sink Unblocker and Drain Cleaner for Kitchen and Bathroom Drains, Fast-Acting Shower Drain Unblocker, Easy to Use Sink Cleaner

Why We Love It

Maximum strength for tough blockages.
Versatile usage in home spaces.
Convenient and easy to use.

Main Highlights

EFFORTLESSLY UNBLOCKS CLOGGED DRAINS - with a maximum strength formula, this heavy duty drain unblocker destroys even the toughest clogs or blockages in your pipes and leaves them flowing freely and smoothly
FOR BOTH KITCHEN AND BATHROOM – versatile pipe unblocker works perfectly in both the kitchen and bathroom which makes it the ideal kitchen sink unblocker for your home to clear pipes blocked with hair, residue, grease, food and more
DESIGNED FOR ALL PIPES - not only is this shower drain unblocker effective, but it's also made with a safe formula that can be used in all types of pipes, including PVC and metal, so it doesn't cause any damage to your plumbing
EASY TO USE - simply pour the toilet unblocker liquid down the blocked drain, leave for 15 minutes and flush with hot water to unblock toilet, sink and shower for clean, free-flowing pipes
MADE IN THE UK - our entire range has been formulated to offer maximum cleaning power with minimum effort. All distinctively fragranced and great value for MAX-imum satisfaction

Green Gobbler Drain Unblocker PACS | Hair Clog Remover | Toilet Clog Remover | Sinks & Tub Drain Cleaner | 3 Pac with Free Hair Grabber Tool

5% OffFree Shipping

Why We Love It

Easy to use, no mess.
Effective against common blockages.
Safe and fully guaranteed.

Main Highlights

EASY TO USE: Fast and Powerful Single Use Pacs, No Measuring, No Guessing How Much To Use, No Mess. For Toilet clogs. ALL ORDERS INCLUDE 1 Hair Grabber Tool
WORKS FOR: Bathroom Sinks, Bath Tubs, Showers, Toilets, Kitchen Sinks, Floor Drains, Slop Sinks, Urinals, RV Drains and More
EFFECTIVE AGAINST: Grease, Hair, Toilet Paper, Soap Scum, Organic Materials, Body Oils, Calcium and Lime Buildup, Rust, Flushable Baby Wipes, Toothpaste, Shampoo Residue, Iron Buildup
SAFER: alternative for picpes compared to toxic and dangerous liquid drain chemicals
GUARANTEE : We value our customers and we stand behind ALL of our products 100 percent 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

Kilrock Rhino 1 Litre Heavy Duty Drain & Toilet Unblocker High Strength

9% Off

Why We Love It

Clears stubborn blockages effortlessly.
Effective against multiple clogs.
Industrial strength performance guaranteed.

Main Highlights

Drain cleaner 1 liter.-rhino
High strength industrial product for toilets and drains
bulldozes about pretty much everything
Fat and grease, hair & soap. Food residue, limescale, toilet paper"

Knock Out New Drains/Toilets and Urinals, 1 Litre

4% Off

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

HOMAITER Drain Unblocker, Powerful Cleaner Formula, 260g, Removes Hair, Grease & Soap Scum, Safe for Pipes and Septic Systems

Free Shipping

Why We Love It

Instantly clears tough clogs.
Safe for all plumbing types.
Easy and quick to use.

Main Highlights

Instantly Clears Blocked Drains: HOMAITER Drain Unblocker is a powerful and effective solution for clearing clogged drains. Quickly dissolves hair, grease, soap scum, and food build-up without damaging your plumbing
friendly product: Ideal for homeowners, renters, and anyone who faces recurring drain issues. Perfect for busy kitchens, bathrooms, and showers, clog remover for sink is your go-to solution for maintaining clean and free-flowing drains
Multiple Uses: Best drain cleaner, safe for use in both kitchen and bathroom drains, it provides a quick, easy fix for stubborn clogs. Simply pour, wait, and enjoy free-flowing drains in minutes
Safe for Pipes and Septic Systems: Safe for use on all types of pipes, including PVC, metal, and older plumbing systems. Compatible with septic tanks
Easy-to-Use: Simply pour and wait 5-10 minutes for quick results—no need for tools. Gentle on your plumbing while effectively clearing tough clogs

Inovix® 5 Litre Heavy Duty Drain Unblocker | Sink Unblocker | Fast-Acting Solution for Sinks, Toilets, Showers Removes Hair & Sludge | Industrial Drain Unblocker Ideal For Indoor And Outdoor Drains

Why We Love It

Powerful unblocker for tough clogs.
Fast-acting formula for quick results.
Safe for all pipe types.

Main Highlights

✅ Powerful Drain Unblocker for Home & Commercial Use – Inovix heavy duty drain unblocker tackles even the toughest blockages. Designed for sinks, toilets, showers, and bathroom drains, it restores fast-flowing water in minutes.
✅ Fast-Acting Sink & Shower Drain Unblocker – Say goodbye to standing water! This powerful sink unblocker liquid formula gets to work quickly, dissolving hair, soap scum, and sludge in kitchen sinks, plugholes, and bathroom drains.
✅ Eliminates Bad Smells & Keeps Drains Fresh –Removes Odours & Freshens Pipes This strong drain cleaner not only unblocks but also deodorises. Idle Drain cleaner for bad smells lingering odours caused by sludge, stagnant water, and food debris.
✅ Multi-Purpose & Pipe Safe Formula – Use in bathrooms, kitchens, garages, shops, and more. Safe for ceramic, metal , plastic pipes, and septic tanks too, making it your go-to outdoor drain unblocker tool for regular maintenance.
✅ Industrial Strength Drain Cleaner – Made with high-performance cleaning agents, our 5L solution offers industrial-level power. Cuts through grease, food waste, fat, and organic build-up in residential or commercial settings.
✅ Simple to Use – No Tools Needed – No Tools or Plumbers Needed Just pour 1L of our powerful unblocker liquid directly into the affected area. Leave for 5–30 minutes (or overnight for tough blockages), then flush with hot water.
✅ Large 5 Litre Value Pack – Supplied in a generous 5L container, Inovix provides long-lasting use and great value. Ideal for households, landlords, cleaners, and facilities management teams.

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

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.

8.7

Excellent

We scanned 714 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 Luigi's, Green Gobbler, Max, Kilrock, Knock Out, HOMAITER, Inovix, Zep, STORM TRADING GROUP, 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 3571 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 Luigi's World's Best Toilet Plunger - Plunger Toilet Unblocker Heavy Duty - Plungers for Unblocking - Unique Strongest Unblocker Tool - Plungers for Unblocking - Clog Remover Tool. We love many things about this product by Luigi's. What sets it apart from the competition is Secure grip for confident use, Powerfully breaks up deep blockages, Generates 8x more plunger force.
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 Luigi's World's Best Toilet Plunger - Plunger Toilet Unblocker Heavy Duty - Plungers for Unblocking - Unique Strongest Unblocker Tool - Plungers for Unblocking - Clog Remover Toolat Luigi's with a 25% 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

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

We scanned 714 products

We concluded that: