Your questions about stain removers answeredWhat is the best stain remover?Vanish oxi action was my top pick for consistent, powerful stain removal across colours and whites. For those on a budget, the Elbow Grease bar punches well above its £1 price point, while the Tesco oxypower powder is the best value option for whites. If you want an eco-friendly choice suitable for sensitive skin, the smol stain remover gel delivers impressive results without bleach.How I tested stain removersI tested a variety of stain removers in my busy home with four kids under nine, where stains are just part of everyday life. From school uniforms to toddler clothes, there was always plenty of mess to try them on.To keep things fair, I used the same laundry detergent for every test and focused on two stubborn stains: strawberry and coffee. I tested each stain remover on the same types of marks, both fresh and set-in. While testing, I judged each stain remover based on these things:Ease of use: I assessed whether the product was simple to apply, clearly labelled and suitable for quick treatment or soaking.Performance: I noted well it removed stains in one wash, and whether any marks remained after treatment.Versatility: I looked at whether it worked across different fabrics and colours without causing damage or fading.Value for money: I judged whether the results justified the price, especially for a stain remover that’s likely to be used regularly.How to use stain removerUsing a stain remover correctly can significantly improve its effectiveness. The most important factor is timing. Professor Quinn advises: “Deal with the stain as early as possible. The longer it sits, the harder it is to remove.”In most cases, the product should be applied directly to the stain, gently worked into the fabric and left to sit before washing. “The ingredients need time to act, so patience is key,” Quinn adds.For tougher or dried-on stains, soaking the fabric before washing can improve results. Following the manufacturer’s instructions is essential, as application time and method can vary between products. Also, never mix stain removers – that can lead to the release of toxic gases.How to remove sweat stains from clothesSweat stains are caused by a combination of proteins, oils and deodorant residue, which can make them difficult to remove.Professor Quinn explains: “Enzyme-based detergents are better for removing protein-based stains like sweat, while surfactants help break down oils.”To remove sweat stains, apply a suitable stain remover directly to the affected area, allow it to sit and then wash according to the fabric’s care instructions. For older or more stubborn stains, soaking may be required to fully break down residue.How to remove oil stains from clothesOil stains require surfactant-based products to break down grease and lift it from fabric fibres.Professor Quinn advises: “For light oil stains, apply a stain remover or liquid detergent to the affected area, let it soak and wash the fabric in hot water. For heavier stains, blot off as much oil as possible, apply the cleaning fluid to the back of the stain, then wash.”Acting quickly improves the chances of removal, as oil can set into fibres over time. Repeating the treatment or combining pre-treatment with soaking may be necessary for more stubborn stains.Why you can trust IndyBest reviewsZoe Griffin has been reviewing products for IndyBest since 2021. For every guide she’s written, Zoe has adopted a thorough approach to testing. She’s an expert when it comes to all things laundry, and her testing experience has seen her review the best fabric conditioners, laundry detergents, and heated airers. She’s also tested many other home products including corded vacuum cleaners and dishwasher tablets.Read more: Best clothes steamers, tried and tested