Our expert testers
We sent stain removers commonly available from major supermarkets to a laboratory for testing. We also took a look at their packaging claims and worked out how much they cost per 100ml or 100g.
How we choose what we test
With this type of consumer good, our aim is to try to cover the whole stain remover market (covering both powder and spray forms of the product), especially what you're most likely to see in stores.
We start off by surveying manufacturers to find out about their range of products. From this information we put together a final list that goes to our buyers. They then head out to the retailers and buy each product, just as you would. We do this so we can be sure what we're testing is the same as any consumer would find, and not 'tweaked' in any way.
How we test
Our Product Use Survey reveals which stains are most common in households. Our experts put each stain remover to the test, attempting to remove:
- olive oil (cooking oil)
- mineral oil
- chocolate ice cream
- baby food
- ground nut oil (which simulates collar grime).
All products are tested as pre-treaters. We use cotton material swatches that have specific formulas of these stains applied to them. Before washing, our experts apply a set amount of each stain remover to the stained swatch and let it sit for five minutes.
We use a front loader washing machine on a cold wash cycle with Earth Choice laundry detergent (a mid-performing detergent in our laundry detergents test).
Following the wash cycle, we measure the degree of stain removal.
We also test how well stain removers compare to washing with:
- Earth Choice laundry detergent only
- water only, and no detergent.
Test criteria explained
The overall score is made up of:
- perspiration (25%)
- grass/mud (20%)
- olive oil (cooking oil) (20%)
- blood (5%)
- tomato (5%)
- mineral oil (5%)
- chocolate ice cream (5%)
- baby food (5%)
- make-up (5%)
- ground nut-oil (which simulates collar grime (5%)
You told us in our Product Use Survey that perspiration, grass/mud and cooking oil stains are the most common stains in your household, so we've weighted these more highly in the overall score than the rest.
Ready to buy?
Take a look at our stain remover reviews to find out which brands came out on top.