
Cockroaches are a scourge on society. They of course have their place in nature, however that place is rapidly starting to move from nature to our habitat. The advent of societies where many of us live in close proximity has given rise to issues like rubbish and waste control. Sewers are used to ensure waste is taken quickly and efficiently away from or homes for treatment to ensure that the minimal amount of pests or diseases will be around us. Unfortunately the flaw with sewerage systems, and to a certain extent storm water systems (because of the leaves and debris that gets caught in them and rots down into cockroach food) is that cockroaches only need minute traces of waste to feed upon and even in (clean) pipes there is more than enough. Once the cockroach population grows they start to get low on food and the infestation starts to spread as they must search further afield for food. Cockroaches will spread as far and wide as they need to go to find food. This means that they may be using the sewerage system for a home and casual eating, and venture forth of a night to find food on the streets, and even in peoples homes. Over time with no treatment to reduce cockroach numbers in the sewerage system, the numbers just explode. Occasionally events such as flash flooding will inundate the sewers washing to another area many of the cockroaches. In the short term people around the sewer may notice an upsurge in cockroach numbers as they scamper to safety, then may notice a lull in activity until the many eggs which are left behind, start to hatch and re infest.
