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Cleaning and laundry

Best drain unblockers for kitchens and bathrooms compared in 2026

A blocked drain needs the right tool for the blockage, and hair, grease and soap each call for something different. This roundup compares HG, Mr Muscle, Buster, Cillit Bang and a long-handle plunger. They cover kitchen sinks, showers, baths, bathroom sinks and toilets, in formats from enzyme liquid and foam to gel and a manual tool. Match the product to the room and the blockage before you buy. Follow the label directions and never mix drain products.

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Buster Bathroom

Our Top Pick

Buster Bathroom

Buster Bathroom comes as 2 x 300ml for shower, bath and bathroom sink pipes. It acts fast and dissolves hair, sludge and soap, the usual bathroom culprits. Two bottles mean you can treat more than one drain or keep a spare.

View on Amazon UK

Drain unblockers compared by format, target blockage and use

ProductBrandPriceRetailerFormat and packVolume or sizeStated useTarget blockage or feature
HGHG£6.85Checked 6 Nov 2026, 17:00 UTCAmazon UKEnzyme and microbe drain cleaner1LKitchen sinks and plugsFat, oil and food residue; 6–8 hour action; biodegradable and septic-tank safe
Mr MuscleMr Muscle£3.0Checked 6 Nov 2026, 17:00 UTCAmazon UKFoaming drain unblocker500mlDrains and sinksFoams to unblock and eliminate odour
Buster BathroomBuster£8.0Checked 6 Nov 2026, 17:00 UTCAmazon UKBathroom drain unblocker, 2-pack2 × 300mlShower, bath and bathroom sink pipesFast-acting; dissolves hair, sludge and soap
Cillit BangCillit Bang£4.5Checked 6 Nov 2026, 17:00 UTCAmazon UKHair-unblocking gel1L; 2 usesShowers and bathsDissolves hair-based blockages
Long-handle toilet plungerCUCHI MUCHI£4.45Checked 6 Nov 2026, 17:00 UTCAmazon UKManual long-handle plungerLong-handle toolToilets, sinks and bathroomsSuction-cup blockage removal

Please check the Amazon page for the current price.

Kitchen and bathroom drain unblockers at a glance

HG

Best for Kitchen Grease

HG

A 1L enzyme and microbe cleaner for fat, oil and food residue in kitchen sinks.

HG Kitchen Drain and Plug Unblocker is a 1L enzyme and microbe kitchen sink cleaner. It works on fat, oil and food residue over 6–8 hours. It is biodegradable and septic-tank safe.

Price£6.85Checked 6 Nov 2026, 17:00 UTC

Key Details

Format and pack
Enzyme and microbe drain cleaner
Volume or size
1L
Stated use
Kitchen sinks and plugs
Target blockage or feature
Fat, oil and food residue; 6–8 hour action; biodegradable and septic-tank safe

What We Like

  • Targets fat, oil and food residue, the usual kitchen blockages
  • Biodegradable and septic-tank safe

Considerations

  • It takes 6–8 hours to work, while Buster is fast acting
  • It is for kitchen sinks, so it is not the pick for hair in showers or baths
View on Amazon UK
Mr Muscle

Best Foaming Option

Mr Muscle

A 500ml foaming drain unblocker that foams to unblock and eliminate odour.

Mr Muscle Drain Unblocker Foamer comes in a 500ml bottle. It foams to unblock and to eliminate odour, which makes it a handy general-purpose option to keep close to hand.

Price£3.0Checked 6 Nov 2026, 17:00 UTC

Key Details

Format and pack
Foaming drain unblocker
Volume or size
500ml
Stated use
Drains and sinks
Target blockage or feature
Foams to unblock and eliminate odour

What We Like

  • Foaming format that unblocks and eliminates odour
  • 500ml bottle is easy to store and handle

Considerations

  • At 500ml it is half the size of the 1L HG and Cillit Bang bottles, so it goes less far over repeated use
  • Buster and Cillit Bang are made for hair-heavy shower and bath blockages, while Mr Muscle's foam is a more general-purpose choice
View on Amazon UK
Buster Bathroom

Best Overall

Buster Bathroom

A 2 x 300ml pack for shower, bath and bathroom sink pipes that dissolves hair, sludge and soap.

Buster Bathroom Drain Unblocker comes as 2 x 300ml. It is for shower, bath and bathroom sink pipes. It acts fast and dissolves hair, sludge and soap.

Price£8.0Checked 6 Nov 2026, 17:00 UTC

Key Details

Format and pack
Bathroom drain unblocker, 2-pack
Volume or size
2 × 300ml
Stated use
Shower, bath and bathroom sink pipes
Target blockage or feature
Fast-acting; dissolves hair, sludge and soap

What We Like

  • Dissolves hair, sludge and soap, the main bathroom blockages
  • Two bottles let you treat more than one drain or keep a spare

Considerations

  • It is made for bathroom pipes, while HG suits kitchen grease
  • Each bottle is 300ml, smaller than HG's 1L and Cillit Bang's 1L
View on Amazon UK
Cillit Bang

Best Gel for Hair Blockages

Cillit Bang

A 1L gel for hair-based blockages in showers and baths, with two uses.

Cillit Bang Hair Drain Unblocker is a 1L gel made for showers and baths. It targets hair-based blockages and is designed for two uses, which suits bathrooms where hair is the main problem.

Price£4.5Checked 6 Nov 2026, 17:00 UTC

Key Details

Format and pack
Hair-unblocking gel
Volume or size
1L; 2 uses
Stated use
Showers and baths
Target blockage or feature
Dissolves hair-based blockages

What We Like

  • Gel formula aimed at hair-based blockages in showers and baths
  • Generous 1L bottle designed for two uses

Considerations

  • Its focus is hair in showers and baths, while HG is the better fit for kitchen fat, oil and food residue
  • Buster tackles a wider mix of bathroom blockages, dissolving hair, sludge and soap, and also covers bathroom sink pipes
View on Amazon UK
Long-handle toilet plunger

Best Chemical-Free Option

Long-handle toilet plunger

A manual suction-cup plunger for toilet, sink and bathroom waste-pipe blockages.

This long-handle toilet plunger is a manual suction-cup tool. It deals with blockages in the toilet, sink and bathroom waste pipes.

Price£4.45Checked 6 Nov 2026, 17:00 UTC

Key Details

Format and pack
Manual long-handle plunger
Volume or size
Long-handle tool
Stated use
Toilets, sinks and bathrooms
Target blockage or feature
Suction-cup blockage removal

What We Like

  • Manual tool that uses suction rather than a liquid or gel
  • Covers the toilet, sink and bathroom waste pipes

Considerations

  • It needs some effort, while the liquid and gel options work in the pipe
  • It clears a blockage but does not freshen odours like Mr Muscle's foam
View on Amazon UK