Top 16 Cistern Blocks

Discover the UK's favourite cistern blocks, see how shoppers rate them, and learn where you can buy them across 15 supermarkets.
1

What people say

172 reviews from 5 shops
“These last much longer than the regular in cistern toilet blue”

Where to buy

£1.99
£2.00
£2.49
+2
STORES
2

Where to buy

£2.99
£3.00
£3.00
+3
STORES
3

Where to buy

£1.99
£2.00
£2.50
+1
STORE
4

Where to buy

£2.25
£2.95
£4.99
5

Where to buy

£2.00
6
7
8
9

What people say

178 reviews from 4 shops
“I think they are great”

Where to buy

£2.00
£2.50
£2.75
+1
STORE
10

What people say

220 reviews from 4 shops
“These make every flush smell fresh and the water now has some blue colour which is very clean looking”
“Very easy to use with superb results”

Where to buy

£1.29
£1.60
£1.60
+1
STORE
11

What people say

106 reviews from 1 shop
“These toilet blocks are a good way to keep the toilet fresh for longer”
“These do the job just as well as other leading brands”

Where to buy

£1.00
12
Bloo
Toilet
38g
2 x

What people say

76 reviews from 2 shops
“These are quick and easy to use and then they just do their thing! Every toilet flush I get a nice fresh smell and the water has a slight foam on it”
“I love the strong citrus smell that keeps away the "loo" smell”

Where to buy

£1.29
£1.60
13

Where to buy

£1.70
14

What people say

15 reviews from 3 shops
“I love the purple colour as it is flushing but then water in the bottom of the bowl looks black almost as if someone very”

Where to buy

£9.32
£11.65
£14.29
15

Where to buy

£2.00
16

What people say

17 reviews from 1 shop
“These cistern blocks are fantastic”

Where to buy

£1.55
Toilet Blocks