10 Best Best Heavy Duty Drain Unblocker

10 Best best heavy duty drain unblocker - January 2026

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Last Updated: 03-01-2026

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Spear & Jackson - Heavy Duty Sink And Drain Unblocker Gel - 2 x 5 Litres - Clears Blocked Drains

Spear & Jackson

9.8

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5% Off

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

Spear & Jackson

9.6

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Best value

Jeyes Drain Unblocker (2 x 2L) - Outdoor Drain Unblocker Liquid Heavy Duty - Dissolves Grease, Hair and Food Waste - Powerful Formula Works in 30 Minutes - Easy to Use, No Dilution

Jeyes

9.5

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

HOMAITER

9.2

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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)

The Retail Heaven

9.1

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24% Off

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

8.8

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MultiWare 5 Litre Drain Unblocker | Heavy Duty Sink & Drain Cleaner for Plug Holes, Toilets, Showers & Pipes | Powerful Toilet & Sink Unblocker for Home, Office, Garage & Shops | Cleaning Supplies

MultiWare

8.6

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Jeyes Drain Unblocker (2L) - Outdoor Drain Unblocker Liquid Heavy Duty - Dissolves Grease, Hair and Food Waste - Powerful Formula Works in 30 Minutes - Easy to Use, No Dilution - Cleans and Deodorises

Jeyes

8.4

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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)

Mr Muscle

8.2

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47% Off

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

Mr Muscle

8.1

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Spear & Jackson - Heavy Duty Sink And Drain Unblocker Gel - 2 x 5 Litres - Clears Blocked Drains

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

Jeyes Drain Unblocker (2 x 2L) - Outdoor Drain Unblocker Liquid Heavy Duty - Dissolves Grease, Hair and Food Waste - Powerful Formula Works in 30 Minutes - Easy to Use, No Dilution

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

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)

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

MultiWare 5 Litre Drain Unblocker | Heavy Duty Sink & Drain Cleaner for Plug Holes, Toilets, Showers & Pipes | Powerful Toilet & Sink Unblocker for Home, Office, Garage & Shops | Cleaning Supplies

Jeyes Drain Unblocker (2L) - Outdoor Drain Unblocker Liquid Heavy Duty - Dissolves Grease, Hair and Food Waste - Powerful Formula Works in 30 Minutes - Easy to Use, No Dilution - Cleans and Deodorises

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)

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

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