Pediculus humanus capitis was controled in humans using ethanol containing beverages. Organic solvent and destabilizer membrane properties of these alcohols are the main causes of insect death. Effective control was achieved using 15 or 50 ml of fire-water, (aguardiente), evenly disiributed on the scalp. A disposable plastic bag properly closed around the scalp for only 20-30 minutes provides a letal saturated atmosphere with alcohol water and C02 around the adult, larve and eggs of the insect. Some guidelines are suggested to ensure that optimum control is achieved.