Instrument and method for measuring dosages of anticidal baits for control of showers (atta sexdens rubropilosa) via the main supply hole. The instrument and method of the present invention correlates between the diameter of the most active supply hole and the actual area of the sinkers to define the amount of ideal formicide bait that should be placed next to the supply hole to control a given sinkhole according to with size, based on actual area in m2.
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