The Benton County Noxious Weed Control Board will have a booth at the Ag Expo:

Join the Pasco Chamber of Commerce for Eastern Washington's Premier Ag Expo
$6 at the Door to Attend or Bring a Can of food for $1.00 off. 
Help Les Schwab and 2nd Harvest FILL the FOOD BANK after the Holiday Season!

http://www.easternwaagexpo.com/

Location: Trac Center in Pasco WA