Simple Green

Overall score includes:

Red wine removal (25%)
Oil and dirt removal (25%)
Sauce removal (25%)
Coffee removal (25%)

We use three test methods to test cleaners based on their application and removal methods, while also following any additional instructions on the packaging.

We tested on stains including red wine, oil and dirt, a mixture of tomato and soy sauce and coffee. We applied the stains to 100% wool carpet squares and let them set for a few days. We took reflectance readings of the carpet squares before and after cleaning to assess how much of the stain was removed. Each cleaner was tested four times per stain. The average of the reflectance readings is calculated.

Spray and applicator brush cleaners

Method A:
We apply 5ml/g of cleaner to the centre of the carpet square. The carpet is left for a set time, as specified on the packaging. We then gently rub/blot the cleaner into the carpet with a clean damp cloth for 30 seconds. The carpet square is then left to dry.

Foam spray and powder cleaners

Method B:
We apply 5g of cleaner to the centre of the carpet square. We then gently rub/blot the cleaner into the carpet with a clean cloth for 30 seconds. The carpet is left for a set time, as specified on the packaging, then the carpet is vacuumed.

Method C:
We apply 5g of cleaner to the centre of the carpet square. The carpet is left for a set time, as specified on the packaging, then the carpet is vacuumed.