Prices updated daily — 24 October 2026
Product type overview
toilet rim block sits within Cleaning Products, part of Household, Pets & Other. On this page you compare 158 products from 9 UK supermarkets: Aldi, ASDA, Co-op, Iceland, Morrisons, Ocado, Sainsbury's, Tesco and Waitrose. The lowest unit price for toilet rim block is £12.27/kg at Aldi. In total, 10 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 88 products priced per kilo across 9 supermarkets (158 in total)
toilet rim block — compare prices across 9 supermarkets
POWER FORCE
Lemon Toilet Freshener
110 g
£12.27/kg
at 1 supermarket
POWER FORCE
Ocean Toilet Freshener
110 g
£12.27/kg
at 1 supermarket
POWER FORCE
Floral Toilet Freshener
110 g
£12.27/kg
at 1 supermarket
POWER FORCE
Toilet Blocks
76 g
£12.50/kg
at 1 supermarket
TESCO
Tesco Active Toilet Cistern Block 3X45g
135 g
£12.59/kg
at 1 supermarket
Sainsbury's
Sainsbury's In Cistern Blocks Blue 2x45g
90 g
£12.78/kg
at 1 supermarket
Morrisons
Morrisons Toilet Block Blu
76 g
£14.47/kg
at 1 supermarket
BLOO
Bloo Toilet Blocks - Lemon 4 x 50g (200g)
200 g
£15.00/kg
at 2 supermarkets
Bloo
Bloo 3in1 Anti-Clogging Toilet Blocks Original Blue 4 x 50g (200g)
200 g
£15.00/kg
at 1 supermarket
Astonish
Astonish Foam & Fresh Eucalyptus 3 x 48g
144 g
£15.62/kg
at 1 supermarket
Domestos
Domestos Power 5 Lime Toilet Rim Blocks 5x 50 g
250 g
£19.00/kg
at 1 supermarket
Domestos
Domestos Power 5 Ocean Toilet Rim Blocks 5x 50 g
250 g
£19.00/kg
at 1 supermarket
Domestos
Domestos Power 5 Toilet Rim Block Fresheners Lavender 2x 50g
100 g
£20.00/kg
at 2 supermarkets
Domestos
Domestos Power 5 Magnolia Toilet Rim Blocks 2x 50 g
100 g
£20.00/kg
at 1 supermarket
Bloo
Bloo 3in1 Anti-Clogging Toilet Blocks Lemon 2 x 50g (100g)
100 g
£20.00/kg
at 1 supermarket
BLOO
Bloo Power Active Flower Rim Blocks 3 x 50g
150 g
£20.00/kg
at 4 supermarkets
Domestos
Domestos Power 5 Toilet Rim Block Freshener Ocean 2x 50g
100 g
£20.00/kg
at 1 supermarket
Bloo
Bloo Incistern Toilet Block Flowers 2 x 50g
100 g
£20.00/kg
at 1 supermarket
Bloo
Bloo Power Active Flower Triple
150 g
£20.00/kg
at 1 supermarket
Sainsbury's
Sainsbury's Ocean Rim Block 2x50g
100 g
£20.00/kg
at 1 supermarket
Sainsbury's
Sainsbury's Lemon Rim Blocks 2x50g
100 g
£20.00/kg
at 1 supermarket
Domestos
Domestos Power 5 Toilet Rim Block Freshener Lime 2x 50g
100 g
£20.00/kg
at 2 supermarkets
Morrisons
Morrisons Toilet Block Ocean
96 g
£20.83/kg
at 1 supermarket
Bloo
Bloo Power Active Rim Block Lemon 2 pack
100 g
£21.00/kg
at 5 supermarkets
Bloo
Bloo Power Active Flowers Twin Toilet Rim Block
100 g
£21.00/kg
at 3 supermarkets
BLOO
Bloo Power Active Fruitopia Toilet Rim Block Twin 2x50g
100 g
£21.00/kg
at 2 supermarkets
Bloo
Bloo Self Active Flowers Duo
150 g
£21.67/kg
at 1 supermarket
Domestos
Domestos Power 5 Ocean Toilet Rim Blocks 3x 50 g
150 g
£21.67/kg
at 1 supermarket
Domestos
Domestos Power 2 x 50g Pine Toilet Rim Blocks
100 g
£22.50/kg
at 1 supermarket
Bloo
Bloo 3in1 Anti-Clogging Toilet Block Original Blue 50g
50 g
£25.00/kg
at 1 supermarket
Bloo
Bloo 3in1 Anti-Clogging Flowers Toilet Block 50g
50 g
£25.00/kg
at 1 supermarket
BLOO
Bloo 2in1 Cleaning Foam Fresh Scent Toilet Blocks 2 x 50g
100 g
£25.00/kg
at 1 supermarket
Bloo
Bloo Lemon Toilet Blocks
100 g
£25.00/kg
at 2 supermarkets
Domestos
Domestos Power 5 Lavender Toilet Freshener Rim Block Cleaner Duo Pack 2x50g
100 g
£25.00/kg
at 1 supermarket
Domestos
Domestos Power 5 Ocean Toilet Rim Blocks 2x 50 g
100 g
£25.00/kg
at 1 supermarket
Domestos
Domestos Power Rimblocks Duo Pine 2 x 50g
100 g
£25.00/kg
at 1 supermarket
Bloo
Bloo Original Blue Toilet Rim Blocks
100 g
£25.00/kg
at 1 supermarket
Bloo
Bloo Power Active Lemon
50 g
£26.60/kg
at 2 supermarkets
Bloo
Bloo Self-Active Rimblock - Flowers 3 Pack
150 g
£26.67/kg
at 1 supermarket
Duck
Duck Colouring Rim Block Blue
36 g
£27.78/kg
at 3 supermarkets
Duck
Duck Colouring Rimblock Watermelon 36g
36 g
£27.78/kg
at 2 supermarkets
Duck
Duck Colouring Rimblock Mint 36g
36 g
£27.78/kg
at 1 supermarket
Bloo
Bloo Citrus 2in1 Toilet Block Clear Water
100 g
£29.00/kg
at 1 supermarket
Bloo
Bloo Self Active Flower Toilet Rim Blocks 2 x 50g
100 g
£29.00/kg
at 3 supermarkets
Domestos
Domestos Power 5 Toilet Rim Block Ocean 50g
50 g
£30.00/kg
at 3 supermarkets
BLOO
Bloo Power active Lemon Toilet Rim Block 50G
50 g
£30.00/kg
at 2 supermarkets
Bloo
Bloo Power Active Flowers Toilet Rim Block 50g
50 g
£30.00/kg
at 1 supermarket
Domestos
Domestos 1 x 50g Gold Freshness Limited Edition Toilet Freshener Rim Block Cleaner
50 g
£30.00/kg
at 1 supermarket
Bloo
Bloo Self Active Bleach Twin
100 g
£30.00/kg
at 3 supermarkets
Domestos
Domestos Power 5 Toilet Rim Block Freshener Lime 50g
50 g
£30.00/kg
at 2 supermarkets