10 bestDrain Cleanersof September 2025
112M consumers helped this year.
30% off
1

Buster Bathroom Drain Unblocker 300ml, Pack of 2 – Sink Unblocker Removes Hair & Sludge in Showers, Baths & Sinks. Fast-Acting Shower Drain Unblocker Clears Blockages & Slow-Draining Water
Buster

9.8
2

Buster Clean & Fresh Granules, 300g, 6 Pack, Tackle Smells and Stains for Clean and Fresh Plugholes, Drains, Dishwashers and Washing Machines - Fast Acting and Lasting Results
Buster

9.6
28% off
3

HG Drain & Plug Hair Unblocker, Removes Hair from Pipes & Drains – 200ml + 250ml
HG

9.3
16% off
4

Cillit Bang 3-in-1 Power Cleaner Odour Stop Drain Unblocker Gel, Drain Cleaner For Kitchen Sink Drains, Bathroom Showers, Baths & Basins (Pack of 5)
Cillit Bang

9.1
25% off
5

Buster Kitchen Plughole Unblocker 150g, Pack of 3 - Kitchen Drains & Sinks Unblocker, Blasts Fat & Food Debris – Fast Acting Plughole Unclogger, Clears Blockages & Slow-Draining Water
Buster

8.8
OtherUp to 35% off
6

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

8.5
7

Spear Jackson Heavy Duty Sink and Drain Unblocker Gel - Powerful Formula- Indoor and Outdoor, 5 l (Pack of 1)
Spear & Jackson

8.3
16% off
8

2 x Powerful Drain Cleaner & Unblocker l 2 x 1KG Caustic Soda | Fast-Acting, Heavy-Duty Sink & Drain Cleaner | Strong & Effective | The Original & Best l Pack of 2 (Packaging Varies)
The Retail Heaven

8.0
9

HG Kitchen Drain & Plug Unblocker, Natural, Heavy Duty, Kitchen Sink Unblocker & Cleaner for Pipes, Septic Tank Safe - 1 Litre
HG

7.7
10

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

7.4

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