WHO defines “disinsection” as the procedure whereby health measures are taken to control or kill the insect vectors of human diseases present in baggage, cargo, containers, conveyances, goods and postal parcels.
There are four methods of aircraft disinsection.
- Residual disinsection, this involves the regular application of a residual insecticide to internal surfaces of the aircraft, except in food preparation areas, at intervals based on the duration of effectiveness. In addition, spot applications are made to surfaces that are frequently cleaned.
- Pre-flight spraying, which involves the aircraft cabin being sprayed with an aerosol containing a residual insecticide while the aircraft is on the ground but before passengers embark. Pre-flight spraying may be combined with blocks-away or top of-descent spraying.
- Blocks-away spraying, this involves aerosol spraying of the passenger cabin after the doors have been locked following embarkation but, before take-off.
- Top-of-descent spraying, which is, in-flight spraying carried out as the aircraft starts its descent to the destination airport.