There are many species of cockroach found around the world but only a few that can be found in the UK can cause public heath risks and cockroach infestations.
German Cockroach Blattella germanica
Commonly found in kitchens, both domestic and industrial in boiler rooms, restaurants and industrial dish washers to name only a few places. They prefure a hot steamy environment which is why it is also known as a steam fly.
The female can produce 4-6 egg cases (ootheca) during her lifetime. each case containes 30-40 eggs. Eggs hatch in 28-30 days and nymphs develope to adults in 40-125 days.These can be esculated due to environment and conditions. German cockroaches produces more eggs and has more generations per year than any other cockroach.