OXALIC ACID Vapor versus Dribble or Spray 2015 article by Jennifer Berry UGA Bee Lab in Bee Culture magazine CLICK following link to read http://www.beeculture.com/oxalic-acid-effective-easy-on-bees-but/#.V592JNGEuMg.facebook
http://www.beeculture.com/oxalic-acid-effective-easy-on-bees-but/