| 7 Products | Jan 2025 | Jan 2026 | Change |
| Calgon 4-in-1 Washing Machine Water Softener Limescale Protection Gel (750ml) | £6.86 | £6.23 | - £0.63 -9.2% decrease |
| | £5.00 | £5.00 | £0.00 No change |
| | £7.00 | £7.00 | £0.00 No change |
| | £7.00 | £7.00 | £0.00 No change |
| | £6.25 | £5.00 | - £1.25 -4.9% decrease |
| | £6.18 | £7.35 | + £1.17 -0.3% increase |
| | £7.00 | £7.00 | £0.00 -0.3% increase |
| | £9.99 | £5.00 | - £4.99 -10.5% decrease |
| | £6.49 | £6.49 | £0.00 -9.2% increase |
| Calgon 4-in-1 Washing Machine Cleaner Tablets () | £12.26 | £12.62 | + £0.36 2.9% increase |
| | £12.00 | £10.00 | - £2.00 -16.7% decrease |
| | £12.00 | £12.00 | £0.00 -8.3% increase |
| | £16.00 | £16.00 | £0.00 -5% increase |
| | £9.00 | £9.00 | £0.00 -4.1% increase |
| | £10.35 | £10.35 | £0.00 -3.4% increase |
| | £16.00 | £21.00 | + £5.00 4% increase |
| | £10.48 | £10.00 | - £0.48 2.9% decrease |
| Calgon Hygiene Tabs Water Softener () | £5.55 | £5.91 | + £0.36 6.5% increase |
| | £4.25 | £4.25 | £0.00 No change |
| | £4.00 | £4.00 | £0.00 No change |
| | £6.00 | £6.00 | £0.00 No change |
| | £7.95 | £9.39 | + £1.44 6.5% increase |
| Calgon Hygiene Plus Washing Machine Water Softener () | £15.17 | £15.17 | £0.00 No change |
| | £12.00 | £12.00 | £0.00 No change |
| | £15.50 | £15.50 | £0.00 No change |
| | £18.00 | £18.00 | £0.00 No change |
| Calgon 4-in-1 Washing Machine Water Softener Tablets () | £22.97 | £20.95 | - £2.02 -8.8% decrease |
| | £25.00 | £25.00 | £0.00 No change |
| | £20.93 | £16.89 | - £4.04 -8.8% decrease |
| Calgon Hygiene Tabs Water Softener () | £22.95 | £20.98 | - £1.97 -8.6% decrease |
| | £23.00 | £25.50 | + £2.50 10.9% increase |
| | £22.90 | £16.45 | - £6.45 -8.6% decrease |
| Calgon 4 in 1 Washing Machine Cleaner Limescale Tablets () | £12.40 | £16.00 | + £3.60 29% increase |
| | £12.40 | £16.00 | + £3.60 29% increase |
