Swarfega Oil & Grease remover
Price: £3.98 Usable volume: 102 litres
Getting more than 100 litres of solution from two litres of concentrate sounds unlikely, but we used the Swarfega at this dilution throughout our test. And despite the high water content, it made our fresh oil stain vanish effortlessly. It also did a really good job of lifting the old, ingrained mark – although remnants were still visible after treatment. The low-foam formula made rinsing easy, securing this product our Best Buy award.