Best Drain Openers of 2026
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Last Updated - 17/02/2026
Last Updated - 17/02/2026
Best Choice
Professional Drain Cleaner, 1 liter, Fast-Acting Chemical Formula for Sinks, Toilets, Showers, Removes Grease, Hair, Odors (Professional & Trad Use) (2 Pair Gloves Including)
Main highlights
- VERSATILE APPLICATION: Can be used in most home drains like kitchen sinks, bathrooms, showers, and toilets.
- ODOUR ELIMINATION: Removes clogs and helps get rid of bad drain smells.
- HEAVY-DUTY PERFORMANCE: Strong enough to break down tough clogs from grease, hair, soap, and everyday buildup.
- GENEROUS SIZE: Large 1000g container gives enough product for multiple uses to keep drains clear and flowing.
- FAST-ACTING FORMULA: A strong drain cleaner that works fast to clear tough clogs in sinks, toilets, and shower drains, helping water flow freely again with less effort.
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02
5 Litre Heavy Duty Sink & Drain Unblocker Strong Cleaning Liquid Plug Hole Toilet Cleaner Tool For Home, Office, Garage & Shops (1 x 5 Litre)
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.
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Value for Money
Mr Muscle Drain Unblocker, Sink & Drain Cleaner (2 x 1L) Fast Acting Heavy Duty Drain Gel, Dissolves Clogs, Works 3x Better Than Bleach, Safe for All Pipes, Duo Pack
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 pipe
- 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
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04
Mr Muscle Drain Unblocker, Sink & Drain Cleaner (2 x 1L) Fast Acting Heavy Duty Drain Gel, Dissolves Clogs, Works 3x Better Than Bleach, Safe for All Pipes, Duo Pack
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 pipe
- 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
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05
Mr Muscle Drain Unblocker, Sink & Drain Cleaner (2 x 500ml), Up to 2 Uses, Fast Acting Heavy Duty Drain Gel, Dissolves Clogs, Works 3x Better Than Bleach, Safe for All Pipes, Duo Pack
Main highlights
- SAFE FOR ALL PIPES: Mr Muscle drain unblocker is safe and suitable for use on all types of pipes, ensuring no damage to your plumbing system
- QUICK-ACTION FORMULA: Engineered to cut through standing water quickly, this product efficiently unblocks plugholes
- POWERFUL SINK SOLUTION: This sink power unblocker is designed to destroy the toughest clogs in your drain effectively
- POWERFUL BLOCKAGE REMOVAL: Specially formulated as a blocked drain cleaner, it effectively dissolves clogs caused by debris in sinks, plugholes, and pipes
- LABORATORY TESTED MIGHT: 3x more effectiveness than bleach as a pipe unblocker, particularly in removing hair, *Based on hair removal in laboratory testing
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06
Mr Muscle Drain Unblocker, Sink & Drain Cleaner (2 x 500ml), Up to 2 Uses, Fast Acting Heavy Duty Drain Gel, Dissolves Clogs, Works 3x Better Than Bleach, Safe for All Pipes, Duo Pack
Main highlights
- SAFE FOR ALL PIPES: Mr Muscle drain unblocker is safe and suitable for use on all types of pipes, ensuring no damage to your plumbing system
- QUICK-ACTION FORMULA: Engineered to cut through standing water quickly, this product efficiently unblocks plugholes
- POWERFUL SINK SOLUTION: This sink power unblocker is designed to destroy the toughest clogs in your drain effectively
- POWERFUL BLOCKAGE REMOVAL: Specially formulated as a blocked drain cleaner, it effectively dissolves clogs caused by debris in sinks, plugholes, and pipes
- LABORATORY TESTED MIGHT: 3x more effectiveness than bleach as a pipe unblocker, particularly in removing hair, *Based on hair removal in laboratory testing
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07
HG Kitchen Drain & Plug Unblocker, Natural, Heavy Duty, Kitchen Sink Unblocker & Cleaner for Pipes, Septic Tank Safe - 1 Litre
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
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08
HG Kitchen Drain & Plug Unblocker, Natural, Heavy Duty, Kitchen Sink Unblocker & Cleaner for Pipes, Septic Tank Safe - 1 Litre
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
View Deal
09
5 Litre Heavy Duty Sink & Drain Unblocker Strong Cleaning Liquid Plug Hole Toilet Cleaner Tool For Home, Office, Garage & Shops (1 x 5 Litre)
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.
View Deal
10
Buster Bathroom Drain Unblocker (Pack of 2 x 300ml) Fast-Acting Sink Unblocker Dissolves Hair, Sludge and Soap, Drain Cleaner Clears Blockages in Shower, Bath and Bathroom Sink Pipes - Made in UK
Main highlights
- YOUR PLUGHOLE EXPERTS - for over 35 years Buster has obsessively made a range of plughole care products to tackle every drain problem. From the worst blockages to bad odours, Buster gets the job done for you
- WORKS ON ALL YOUR BATHROOM PIPES - this specially formulated pipe unblocker clears blockages inside your shower, bath and basin plugholes, plus it's safe to use on septic systems
- VALUE BUNDLE KEEPS YOU PREPARED - as hair, soap and grime constantly build up in bathroom pipes, this handy two-pack of sink and drain cleaner means you're ready for the next blockage
- FREE-FLOWING DRAINS IN 15 MINUTES - it doesn't matter if it's slow draining water or a full blockage, the fast acting shower drain unblocker gets to work almost instantly in just 15 minutes (leave it overnight for even better results)
- CLEARS STUBBORN BLOCKAGES IN ONE SHOT - hair, sludge and soap scum are the usual suspects for slow-draining pipes but one shot of concentrated Buster bathroom plug unblocker goes straight to the blockage and dissolves all the nasties
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