The key to getting beer stains out of carpet is to blot up
the spill before it become a stain. But lets assume you discovered
the spill the next day and want to remove not only any discoloring,
but also the odor. Here are the steps to take.
Use white cotton cloth or plain white paper towels to soak
up any remaining liquid. Mix 1/3 cup white vinegar with 2/3 cup
water in a spray bottle. Spray the area lightly with this mixture,
to neutralize the stain and odor. Blot up the moisture with white
paper towels or cotton cloth, wet again, blot it up - do this
until you have used up the mixture.
Mix a few drops of plain Dawn dish washing detergent in about
a cup of warm water and apply this mixture to the spot a little
at a time, blotting up the excess between applications. Then
apply plain water a little at a time, again blotting up the excess
between applications. Do this until all the detergent is removed.
In this video Josh will show you
a basic procedure for getting beer stains and odor out of carpet
using dish washing detergent, amonia, and vinegar. I would dilute
the detergent with some water for better results. He shows you
the proper way to blot the liquids up (no rubbing!):
You can also add a bit of carpet freshening powder to remove
any remaining odor, although this may not be necessary. Either
way, dry the area by placing a fan nearby to blow over it (or
at least open a window to allow some air movement). Of course,
if you added carpet freshener, vacuum it out later.
If any odor remains you may need to rinse and dry the area
repeatedly. Another option is to use a wet/dry shop-vac, so you
can more thoroughly flush the area with water and also thoroughly
suck it out.
That's how you get beer out of carpet. If you have so many
spills and stains that the smell remains and the source is a
mystery, you might have to pay for an ozone machine rental or
other odor removal product.