10 bestDrain Cleaner For Cast Iron Pipesof September 2026

112M consumers helped this year.

10% off

1

Mr Muscle Drain Unblocker Liquid (2 x 1L), Sink & Drain Cleaner, Strong & Fast Acting Heavy Duty Gel Formula, Dissolves Clogs, Works 3x Better Than Bleach, Safe for All Pipes

Mr Muscle Drain Unblocker Liquid (2 x 1L), Sink & Drain Cleaner, Strong & Fast Acting Heavy Duty Gel Formula, Dissolves Clogs, Works 3x Better Than Bleach, Safe for All Pipes

Mr Muscle Drain Unblocker Liquid (2 x 1L), Sink & Drain Cleaner, Strong & Fast Acting Heavy Duty Gel Formula, Dissolves Clogs, Works 3x Better Than Bleach, Safe for All Pipes

Mr Muscle

9.7

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5% 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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6% off

3

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 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 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

9.1

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4

Zep Commercial Unblocker Heat Drain Liquid

Zep Commercial Unblocker Heat Drain Liquid

Zep Commercial Unblocker Heat Drain Liquid

Zep

8.8

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5

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

8.5

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OtherRelated productsUp to 6% off

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 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

8.2

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7

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

7.9

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5% off

8

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

7.6

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9

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

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

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

Spear Jackson

7.3

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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

7.0

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