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10 bestDrain Cleaner For Cast Iron Pipesof December 2025

112M consumers helped this year.

10% off

1

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 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 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 1L)

Mr Muscle

9.7

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9% off

2

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

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

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

Spear & Jackson

9.4

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3

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)

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)

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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4

MultiWare Drain Unblocker | Sink Unblocker | Heavy Duty Drain Cleaner | Toilet Unblocker | Dissolves Clogs Grease Hair Soap | Easy To Use | Safe For ALL Pipes (1)

MultiWare Drain Unblocker | Sink Unblocker | Heavy Duty Drain Cleaner | Toilet Unblocker | Dissolves Clogs Grease Hair Soap | Easy To Use | Safe For ALL Pipes (1)

MultiWare Drain Unblocker | Sink Unblocker | Heavy Duty Drain Cleaner | Toilet Unblocker | Dissolves Clogs Grease Hair Soap | Easy To Use | Safe For ALL Pipes (1)

MultiWare

8.8

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8% off

5

Zep Commercial Unblocker Heat Drain Liquid

Zep Commercial Unblocker Heat Drain Liquid

Zep Commercial Unblocker Heat Drain Liquid

Zep

8.6

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OtherRelated productsUp to 3% off

Spear and Jackson 2 x 500ml Heavy Duty Sink and Drain Unblocker

Spear and Jackson 2 x 500ml Heavy Duty Sink and Drain Unblocker

Drano Liquid Clog Remover Drain Cleaner, 32 oz

Drano Liquid Clog Remover Drain Cleaner, 32 oz

Drano (Mr Muscle) Kitchen Gel Tube Free Drain Cleaner Pipe Cleaner for Kitchen Removes Blockages 1000ml

Drano (Mr Muscle) Kitchen Gel Tube Free Drain Cleaner Pipe Cleaner for Kitchen Removes Blockages 1000ml

6

Powerful Caustic Soda Drain Cleaner(1kg) | Effective Clog Remover, Industrial Strength Formula, Fast Action

Powerful Caustic Soda Drain Cleaner(1kg) | Effective Clog Remover, Industrial Strength Formula, Fast Action

Powerful Caustic Soda Drain Cleaner(1kg) | Effective Clog Remover, Industrial Strength Formula, Fast Action

EasyClean

8.3

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5% off

7

Black Swan 51999 PCDC Powder Crystal Drain Cleaner, White, 15.24 cm*10.32 cm*10.32 cm

Black Swan 51999 PCDC Powder Crystal Drain Cleaner, White, 15.24 cm*10.32 cm*10.32 cm

Black Swan 51999 PCDC Powder Crystal Drain Cleaner, White, 15.24 cm*10.32 cm*10.32 cm

Black Swan

8.0

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8

Zep Drain Bioclean & Odour Control - 1l, Drain Unblocker For Preventive Maintenance To Keep Drains Unblocked, Perfect For Bad Smells, Sink Cleaner For Smelling Sinks, Zep Commercial

Zep Drain Bioclean & Odour Control - 1l, Drain Unblocker For Preventive Maintenance To Keep Drains Unblocked, Perfect For Bad Smells, Sink Cleaner For Smelling Sinks, Zep Commercial

Zep Drain Bioclean & Odour Control - 1l, Drain Unblocker For Preventive Maintenance To Keep Drains Unblocked, Perfect For Bad Smells, Sink Cleaner For Smelling Sinks, Zep Commercial

Zep

7.7

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9

Chemiphase Drainklenz - Non Acid Drain & Pipeline Cleaner/Descaler - 20 Litres

Chemiphase Drainklenz - Non Acid Drain & Pipeline Cleaner/Descaler - 20 Litres

Chemiphase Drainklenz - Non Acid Drain & Pipeline Cleaner/Descaler - 20 Litres

Chemiphase

7.4

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10

Powerful Sink & Drain Cleaner - Unclog Your Pipes with Foaming Drain Cleaner and Pipe Dredging Powder (2 Bot)

Powerful Sink & Drain Cleaner - Unclog Your Pipes with Foaming Drain Cleaner and Pipe Dredging Powder (2 Bot)

Powerful Sink & Drain Cleaner - Unclog Your Pipes with Foaming Drain Cleaner and Pipe Dredging Powder (2 Bot)

Tencipeda

7.1

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