Popular methods for applying oxalic acid


To apply oxalic acid via the dribble approach you will need:

  • A container to create your mixture, with a tight top (do not use containers that will subsequently used to serve food or drink)
  • A scale to weigh the appropriate amount of oxalic acid
  • A syringe
  • A plastic or wood stirrer
  • Protective gear
  • Hot water
  • Sugar

To make enough mixture for five hives, do the following:

  • Preparation
    • Measure 8.75 grams of oxalic acid and place into your mixing container
    • Add 6 fl oz. (about 150 grams) of hot water and stir until the oxalic acid crystals are fully dissolved (do not shake)
    • Mix in 3/4 cup (about 150 grams) of sugar and stir further until dissolved too
    • Tightly close the container and label clearly (“POISON : OXALIC ACID”)
  • Application (do not open the hive for this purpose when temperatures are in the low 40’s or less)
    • Take the closed container to your hive. It is highly recommended that you also take a considerable amount of water with you, as a way to quickly dilute any spilled mixture with which you may accidentally come into contact
    • Don your protective gear
    • Draw 50 cc of mixture into your syringe (this is the maximum that should be applied to any single hive)
    • Starting from the lower box, expose the upper part of the box to ensure bees are present
    • Where bees exist between frames, dribble no more than 5 cc over the bees
    • If there are bees in the next gap between frames, apply another 5 cc
    • Continue until no more bees are evident or you have used the full 50 cc in the syringe