How to check a cleaner's method suits your fabric or carpet

You've just noticed your bedroom carpet is looking tired, but you're nervous about handing it over to the wrong cleaner. Some methods work beautifully on wool; others can shrink synthetic fibres or leave delicate silk upholstery damaged. Before you book, you need to know exactly how a cleaner will treat your surfaces—and how to verify they actually know what they're doing.

Ask what their standard method is, and why

A cleaner who can explain their approach with confidence is already ahead of the game. They should tell you whether they lean toward hot water extraction, dry cleaning, foam application, or something else—and crucially, they should explain *why* they're recommending that method for your specific fabric or carpet. If they say "we do it all the same way," that's a red flag. Different fibres genuinely need different treatment. Wool, polypropylene, cotton, silk, and synthetic blends all respond differently to moisture, heat and chemical exposure.

When they explain their method, listen for whether they mention checking fibre content first. A professional should ask you what your carpet or upholstery is made of, or offer to inspect it before quoting. They might also mention pre-testing in a hidden corner—standard practice for protecting your investment. Write down their explanation in your own words and ask them to confirm you've understood it correctly. This simple step often reveals whether they're genuinely thinking through your fabric or just running a script.

Request their training credentials and product certifications

Ask where they trained and whether they hold any formal qualifications in carpet or upholstery cleaning. Reputable cleaners often belong to professional bodies that set standards for method and safety. They should be happy to provide evidence—a certificate, membership number, or a name you can verify. You can then search online or contact the organisation directly to confirm the credential is real and current.

Also ask about the cleaning products and treatments they use. A cleaner who knows their craft should be able to name specific products and explain why those brands suit your fabric type. Ask whether their solutions are pH-neutral (gentler on most fibres) or alkaline-based, and whether they're approved for the fibre content you have. If they're vague or dismissive when you ask these questions, move on.

Check references from people with similar fabrics

When you ask for references, don't just accept a list of names. Call or message at least two past clients and ask specifically whether the cleaner has worked on the same type of carpet or upholstery as yours. Ask how the fabric looked and felt after cleaning—did it feel soft or stiff, did the colour remain true, did any shrinkage occur? If the cleaner has cleaned expensive upholstery before and did it well, that matters far more than a generic "they were lovely" testimonial.

If a cleaner is reluctant to provide references, or if the references they give seem generic or evasive when you contact them, that's a signal to keep searching. A cleaner confident in their method on your fibre type will have happy clients willing to vouch for them.

Ask them to do a small test patch first

Before committing to your whole carpet or a large piece of furniture, ask whether they'll clean a small, inconspicuous area as a trial. This lets you see their actual work, feel the texture of the fabric afterward, and check whether the result meets your expectations. A good cleaner will welcome this—it protects both of you. They get to show you their standard, and you get real proof before they tackle the visible surfaces.

Once you've gathered this information, compare what you've learned across at least two or three cleaners. The one who asks the most questions about your fabrics, explains their reasoning clearly, and offers a test patch is likely your safest choice. When you're ready to book, you'll find verified cleaners on Strove who've been vetted and reviewed—making that final step much simpler.