Prices updated daily — 3 June 2026
Product type overview
toilet rim block sits within Cleaning Products, part of Household, Pets & Other. On this page you compare 127 products from 6 UK supermarkets: Tesco, Sainsbury's, ASDA, Aldi, Morrisons and Waitrose. The lowest unit price for toilet rim block is £5.20/kg at Sainsbury's. In total, 9 variants of toilet rim block are compared (different pack sizes and compositions). All prices are normalised to the same unit (per kilogram, per litre or per piece) so that packs of different sizes can be compared fairly — a larger pack is not automatically the best value. The ranking below shows, per variant, which supermarket currently has the sharpest price, including own-label products alongside national brands. Prices refresh daily from the retailers' own public price lists, so you never see stale offers when planning your weekly shop. Allsupers uses no affiliate links or paid placement; the ranking is purely price-based and updated from public data.
Cheapest toilet rim block
Compare 124 products across 6 supermarkets
toilet rim block — compare prices across 6 supermarkets
Keep It Handy
Keep it Handy Toilet Blocks Ocean
8 pieces
£0.12/unit
at 1 supermarket
Duck
Duck Pine Toilet Cleaner Fresh Strips x3
3 pieces
£0.33/unit
at 1 supermarket
Domestos
Domestos 3 in 1 Power Ocean Toilet Block 35 g
1 pieces
£1.00/unit
at 1 supermarket
Domestos
Domestos 3 in 1 Power Citrus Toilet Block 35 g
1 pieces
£1.00/unit
at 1 supermarket
Domestos
Domestos Power 5 Toilet Rim Block Magnolia 50 g
1 pieces
£1.00/unit
at 2 supermarkets
Domestos
Domestos Power 5 Ocean Toilet Rim Block 50 g
1 pieces
£1.00/unit
at 1 supermarket
Domestos
Domestos Power 5 Toilet Rim Block Lime 50 g
1 pieces
£1.00/unit
at 2 supermarkets
ASDA
ASDA Blue Water Toilet Rimblock 40g
1 pieces
£1.14/unit
at 1 supermarket
Duck
Duck Active Clean Rim Block Marine Single 38.6g
1 pieces
£1.38/unit
at 2 supermarkets
Domestos
Domestos Power 5 x 50g Gold Freshness Toilet Rim Block
250 g
£5.20/kg
at 1 supermarket
Sainsbury's
Sainsbury's In Cistern Blocks Blue 2x45g
90 g
£11.11/kg
at 1 supermarket
POWER FORCE
Toilet Freshener
110 g
£12.27/kg
at 1 supermarket
POWER FORCE
Toilet Freshener
110 g
£12.27/kg
at 1 supermarket
POWER FORCE
Blue Toilet Block
76 g
£12.50/kg
at 1 supermarket
TESCO
Tesco Active Toilet Cistern Block 3X45g
135 g
£12.59/kg
at 1 supermarket
Morrisons
Morrisons Toilet Block Blu
76 g
£13.16/kg
at 1 supermarket
BLOO
Bloo 2in1 Cleaning Foam Fresh Scent Toilet Blocks 2 x 50g
100 g
£17.50/kg
at 1 supermarket
Morrisons
Morrisons Toilet Block Ocean
96 g
£18.23/kg
at 1 supermarket
Bloo
Bloo Power Active Lemon Rim Block
100 g
£19.50/kg
at 5 supermarkets
Bloo
Bloo Power Active Fresh Flower Rim Block
100 g
£19.50/kg
at 1 supermarket
Bloo
Bloo 3in1 Anti-Clogging Toilet Block Original Blue 50g
50 g
£19.60/kg
at 1 supermarket
Bloo
Bloo 3in1 Anti-Clogging Toilet Block - Flowers 50g
50 g
£19.60/kg
at 1 supermarket
Domestos
DOMESTOS POWER 5 TOILET REFRESHING BLOCK LAVENDER 2 x 50 g
100 g
£20.00/kg
at 2 supermarkets
Bloo
Bloo Power Active Flower Toilet Rim Blocks 2 x 50g
100 g
£20.00/kg
at 4 supermarkets
Domestos
Domestos Power 5 Toilet Rim Block Ocean 50g
50 g
£26.00/kg
at 3 supermarkets
Domestos
Domestos Power 5 Toilet Rim Block Freshener Lime 50g
50 g
£26.00/kg
at 4 supermarkets
Bloo
Bloo Power Active Lemon 50g
50 g
£27.00/kg
at 3 supermarkets
Bloo
Bloo Power Active Rim Block Lemon 50G
50 g
£27.00/kg
at 1 supermarket
Bloo
Bloo Power Active Flowers Toilet Rim Block 50g
50 g
£27.00/kg
at 1 supermarket
Bloo
Bloo Power Active Fragrance Boost Flowers
50 g
£27.00/kg
at 1 supermarket
Duck
Duck Colouring Rim Block Blue
36 g
£27.78/kg
at 3 supermarkets
Duck
Duck Colouring Rim Block Green
36 g
£27.78/kg
at 2 supermarkets
Duck
Duck Colouring Rim Block Virtual Violet 36g
36 ml
£31.39/litre
at 1 supermarket
Duck
Duck Colouring Rim Block Mango Verse 36g
36 ml
£31.39/litre
at 1 supermarket
BLOO
Bloo Self Active Bleach Blue Water Toilet Rim Block 50g
50 g
£35.00/kg
at 2 supermarkets
Duck
Duck Active Clean Rim Block Mango Verse 38.6g
38 ml
£36.32/litre
at 2 supermarkets
Bloo
Bloo Spa Moments Toilet Rim Block - Vitality 50g
50 g
£36.60/kg
at 1 supermarket
Bloo
Bloo Spa Moments Toilet Rim Block - Harmony 50g
50 g
£36.60/kg
at 3 supermarkets
DUCK
Duck Fresh Toilet Strips Lime 3 x 9g
27 g
£37.04/kg
at 2 supermarkets
Duck
Duck Fresh Boost Toilet Rim Block Marine Wave 2x16g
32 g
£39.06/kg
at 3 supermarkets
Duck
Duck Fresh Boost Toilet Rim Block Pink Peony 2x16g
32 g
£39.06/kg
at 3 supermarkets
BLOO
Bloo Brilliant Gel All in 1 Rim Block Arctic Ocean 42g
42 g
£41.67/kg
at 3 supermarkets
Duck
Duck Colouring Rim Block 36g
36 g
£41.67/kg
at 1 supermarket
Duck
Duck Colouring Rim Block Watermelon Whirlwind 36g
36 g
£41.67/kg
at 1 supermarket
Harpic
Harpic Active Blue Water 6 Powers Atlantic Burst 35g
35 g
£48.00/kg
at 1 supermarket
Harpic
Harpic Active Fresh Pink Blossom Toilet Rim Block Single
35 g
£48.00/kg
at 1 supermarket
Duck
Duck Toilet Fresh Disc Holder & Refill Lime 36ml
36 ml
£55.56/litre
at 3 supermarkets
Duck
Duck Toilet Fresh Discs Holder & Refill Marine 36ml
36 ml
£55.56/litre
at 3 supermarkets
Duck
Duck Active Clean Rim Block Tropical
Price per unit unknown
at 1 supermarket
Duck
Duck Active Clean Rim Block Garden Escape
Price per unit unknown
at 1 supermarket