posted on Sep, 1 2010 @ 01:48 AM
Aircraft are just like any other place that has food in it, they attract bugs and require applications of insecticide. On a domestic flight, this is
done once in awhile when the aircraft goes in for maintenance, however, on customs flights there is always concern over what types of harmful insects
may be carried into the country. This is the same reason its illegal to carry certain plants, fruits, or soil even across state lines, let alone
international boarders. Nothing really unusual about it, simply a precaution to keep out alien species.