Consider a level teaspoon of Oxalic crystals as 4 grams. Mix that to 100 ml of warmed 1:1 sugar syrup. Ensure it's all dissolved, may require more heat.
You can get the plastic 60 ml syringe from an Agway or Tractor Supply type store for 5 bucks. Does not come with a needle and you don't use it. 5ml dribble of solution per seam of bees. Not empty seams (between frames) rather those that are covered in bees. Total amount needed depends on how large the brood nest covered in bees is. It's a one and done treatment and perfect for cleaning packages and as a last fall treatment when they are nearly brood less. Only need latex gloves for safety and maybe goggles if you splash around or like to rub your eyes.
Oxalic (wood bleach) can be picked up at a hardware store for around $10 for plastic 12 oz tub. Sublimation of Oxalic is great too but you'd want a respirator with face mask or wear goggles. Amazon has the type below with pink filters, for organic acid vapor, for $37.
You can get the plastic 60 ml syringe from an Agway or Tractor Supply type store for 5 bucks. Does not come with a needle and you don't use it. 5ml dribble of solution per seam of bees. Not empty seams (between frames) rather those that are covered in bees. Total amount needed depends on how large the brood nest covered in bees is. It's a one and done treatment and perfect for cleaning packages and as a last fall treatment when they are nearly brood less. Only need latex gloves for safety and maybe goggles if you splash around or like to rub your eyes.
Oxalic (wood bleach) can be picked up at a hardware store for around $10 for plastic 12 oz tub. Sublimation of Oxalic is great too but you'd want a respirator with face mask or wear goggles. Amazon has the type below with pink filters, for organic acid vapor, for $37.
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