Fruit Fly Bait

by John Priestley


  • 40 ml Cloudy ammonia
  • 2ml vanilla extract
  • 1 cup sugar
  • 2 litres water


I mix all ingredients together then divide the liquid into four 2 litre plastic milk containers which I have made a row of holes (with a hot soldering iron !) around the halfway mark. Then hang them around the perimeter of the fruit fly exclusion area.

(kindly sourced by Maria Page)

2 thoughts on “Fruit Fly Bait

  1. Michel Clairfayt says:

    Good morning John,
    Could you pleaase tell me how long the bait is effective ?
    Has it got to be replaced regularly or when it is all evaporated ?
    Kind regards,

  2. In my experience I replaced it every couple of weeks to a month because it either evaporates or fills with flies! Best to hang in a shady place where the flies prefer to rest. Maria

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