Top 10 Drain Unblockers

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

What people say

180 reviews from 11 shops
“I found this very useful”
“This is brilliant”

Where to buy

£4.00
£4.00
£4.00
+8
STORES
2

What people say

6 reviews from 2 shops
“This is the best product I have found for a blocked plughole”

Where to buy

£2.49
£4.00
3
Buster
Bathroom Sink Drain Unblocker
300ml
Not tested on animals

What people say

272 reviews from 7 shops
“I found this product better than more popular makes”
“This is an excellent product - perfect to use when the water becomes slow to drain from the plughole in the bath”

Where to buy

£3.95
£4.00
£4.00
+4
STORES
4
5

What people say

156 reviews from 3 shops
“I would definitely get this product again if needed”
“This is a powerful bleach”

Where to buy

£2.60
£2.60
£5.99
6

Where to buy

£3.00
£3.00
£3.25
+2
STORES
7

What people say

48 reviews from 1 shop
“I think it compacted the blockage by pushing it down further”
“I Love this stuff! It did the job in less than an hour and a half and through a sink full to overflow of water”

Where to buy

£2.00
8

What people say

92 reviews from 1 shop
“Very impressed”
“Very pleased”

Where to buy

£2.00
9

What people say

96 reviews from 1 shop
“This is an excellent product very reasonably priced”
“Very pleased and relieved! Will buy again”

Where to buy

£2.45
10

What people say

70 reviews from 2 shops
“This is a great product and I like that you only have to use a small amount meaning one bottle goes a long way”
“Very pleasantly surprised (amazed)”

Where to buy

£6.00
£8.45
11

What people say

4 reviews from 3 shops
“Very pleased to see this at Ocado as I normally have to buy it online”

Where to buy

£2.99
£3.50
£5.49
12

What people say

680 reviews from 8 shops
“Will definitely buy it again and use it regularly or maybe just when it becomes blocked again”
“I will definitely be buying this product for regular use and I would highly recommend”

Where to buy

£2.99
£4.00
£4.00
+5
STORES
13
M&S
Sink & Drain Unblocker
500ml
Vegan
Not tested on animals

Where to buy

£3.50
14

What people say

32 reviews from 2 shops
“I will definitely buy this product again as it was so easy to use me you only had to wait for half an hour”
“Very effective product”

Where to buy

£4.80
£4.99
15

What people say

87 reviews from 3 shops
“This is definitely the best sink unblocker around! Worth leaving all day or overnight & the results are amazing! I wish I had stocked up on them when they were recently reduced but good value normal price when you know it will work so well”
“This is an old original bath and the drain was badly clogged by hair and black sludge”

Where to buy

£7.90
£7.90
£8.00
16

What people say

82 reviews from 1 shop
“This product is simply brilliant”
“I would definitely buy and use again”

Where to buy

£2.00
17

What people say

148 reviews from 1 shop
“This is great for occasionally throwing down the drains to keep things clear”
“Very happy! Works better than mr muscle in my opinion”

Where to buy

£2.25
18
19

Where to buy

£1.99
£2.00
£2.00
20

Where to buy

£1.00
£1.00
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