If it is cleanable, you could rent a machine like the Rug Doctor and clean
it. I would then use Fabreeze on it. If the cushions are removable and you
live in a warm area, you could put them out in the sun to air out.
You will need a wet and dry vacuum or a rented carpet maching but try a
mixture of ammonia (20% with water) and then a mixture of acetic acid (50%).
Add each and tamp well in before adding water and vacuuming away.
If you want moer info about removing the beer look on
www.DrClean.co.uk/surgery_stains/stain_framepage.asp and click through to
the beer stain.
Hope this helps
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