Where are all these damn cockroaches coming from?

Dear Cecil -

in your column Where are all these damn cockroaches coming from? (January 24, 1975) you state that:

Ermmmm… :dubious: No they don’t. Here in Perth, West Oz, the buggers simply fly in. From big distances. On warm nights (20-30 degrees C).

Mind you, these are the American variety, not the little German ones…

Gordon.

Someone else made a similar statement in this thread.

Hopefully Cecil will provide a reference, with the new policy.