Test carpet before scrubbing, extracting or spotting. All
carpets are different. Some carpets are very sensitive to acid type cleaners
and will lose their color quickly. Other carpet dyes are sensitive to harsh
alkalis.
Use appropriate spotters starting with the mildest. Do not
use harsh spotting agents unless absolutely necessary and always neutralize
high alkaline or high acid cleaners after use. Never dig or brush spots. The
proper procedure is to scrape the spot towards the middle and then tamp the
spot into the white towel or cloth using a brush or other tamping devices. A
meat tenderizer makes a great tamping tool.