Reccomended carpet shampoo?

What's the best carpet shampoo to use for a Vax machine?
Have tried both the Vax own brand and some of that 1001 stuff, carpets look better but there's still some noticable marks.
Was wondering if there's a better one?
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Best Wishes
Simon (aka Dark Angel)
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Dark Angel wrote:

Look in Yellow Pages under 'Janitorial Supplies' to find your local Prochem stockist (most cleaning supplies places stock Prochem).
Buy a 5 litre of Extraction Pro. Dilutes 100-1, costs about 9 + VAT. You won't believe how good it is compared to the domestic rubbish.
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Dave
The Medway Handyman
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