Top 18 Cistern Blocks

Discover the UK's favourite cistern blocks, see how shoppers rate them, and learn where you can buy them across 15 supermarkets.

Bloo

Toilet Blocks 2 In 1 Original Blue

50g

2 x

Where to buy

£1.75

£2.00

STORES

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Bloo

Flowers In Cistern Duo Blocks

50g

2 x

Where to buy

£1.75

£1.96

£2.00

STORES

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Astonish

Foam & Fresh Pink Peony Toilet Rim Blocks

40g

2 x

Where to buy

£2.95

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Sainsbury's

Lemon Rim Blocks

50g

2 x

Where to buy

£2.00

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Keep It Handy

Prism Cistern Blocks Ocean

6 x

Where to buy

£1.00

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Aldi Powerforce

Powerforce Cistern Blocks Blue Water

135g

Where to buy

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Aldi Powerforce

Powerforce Cistern Bleach Block

3 x

Where to buy

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Bloo

Incistern Cube Toilet Blocks Limescale Prevention

50g, 100g

2 x

What people say

563 reviews from 4 shops

“I think they are great”

Where to buy

£2.00

£2.70

£2.75

STORE

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Bloo

Acticlean Cistern Blocks

What people say

10 reviews from 0 shop

“Love that when you're super dehydrated you can make green water with these”

“very happy with my purchase no problem with delivery will be buying online again”

Where to buy

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ASDA

Blue Toilet in-Cistern Blocks

Where to buy

£1.14

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Bloo

Toilet

2 x

Where to buy

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Sainsbury's

M&S Fish Pie for One

45g

2 x

Where to buy

£1.00

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Bloo

3in1 Anti-Clogging Toilet Block Flowers

50g

Where to buy

£0.98

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Ecozone

Forever Flush 2000 Purple Toilet Blocks Eco Friendly Alternative to Loo Rim Hangers Cistern Capsules Clean & Descale WCs Natural Vegan & Non Toxic Cleaner Recyclable Plastic (Set of 2)

Where to buy

£8.40

£11.94

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Bloo

Toilet Blocks Lemon

50g

2 x

Where to buy

£1.75

£2.00

£2.48

STORES

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Bloo

In Cistern Toilet Blocks Lemon

50g

2 x

Where to buy

£2.75

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Tesco

Active Toilet Cistern Block

45g

3 x

What people say

39 reviews from 1 shop

“These cistern blocks are fantastic”

Where to buy

£1.55

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Morrisons

Ocean Fresh In-Cistern Block

Where to buy