Here's the EPA's website:
http://www.epa.gov/oppbead1/pestsales/01pestsales/usage2001_2.htm#3_5  
which includes an Industry/Commercial/Government category and their
definitions:

HOME AND GARDEN USER SECTOR (OR MARKET): Involves pesticides applied by
homeowners to homes and gardens, including lawns and single- and
multiple-unit housing. Does not include pesticides for home & garden
applications by professional applicators.

INDUSTRIAL/COMMERCIAL/GOVERNMENTAL USER SECTOR (OR MARKET): Involves
pesticides applied by professional applicators (by owner/operators/employees
and custom/commercial applicators) to industrial, commercial, and
governmental facilities, buildings, sites, and land; plus custom/commercial
applications to homes and gardens, including lawns. May also be referred to
as "professional market" for pesticides.

Surprisingly the Industry/Commercial/Government category was only 111
million pounds in 2001.  I would have thought it would have been higher.

Anita
www.ancient-art-pottery.com

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