I purchased one of those electronic things that plugs into the wall which is meant to scare cockroaches by sending a pulse through the apartment wiring but while it has reduced the numbers, it seems others have evolved to feed off the electrical signal, increasing their size. I am using one as a coffee table in the lounge and two smaller ones as side tables in the bedroom. They would probably be susceptible to carbon monoxide poisoning though so I will try running a hose pipe from my car exhaust to the apartment, closing the windows and leaving the vehicle running overnight. It is apparently an odourless gas so should not prove an issue for my son's cub group sleepover.
Also, I read somewhere once that cockroaches can survive a nuclear attack so I have been collecting the dead ones and intend to glue several thousand to the walls thereby ensuring my survival should Cyberdyne Systems become self aware between now and when the lease runs out.
oh thanks for the favs