2.1.1 The presence of insects and rodents on ships
is clearly undesirable for various reasons, and in addition to aesthetic
and nuisance aspects, they may damage equipment and spread disease
and infection, contaminate food in galleys and food stores, and cause
damage to cargoes that will result in commercial or other losses.
2.1.2 The same highly toxic chemicals are used
in cargo transport units as on board bulk ships. However, when a cargo
transport unit that contains fumigant chemicals leaves the place at
which it was fumigated, no one can practically supervise the hazard
unless they are aware of the presence of the fumigant. Any person
who later enters the cargo transport unit can, therefore, be unknowingly
exposed to dangerous levels of highly toxic chemicals.