Cockroaches Control in Canberra Cockroaches, like rodents, can carry diseases such as the polio virus as well as cause problems for allergy sufferers. They tend to thrive in warm, humid conditions and can quickly infest the home. Cockroaches thrive in human surroundings, especially in filthy places. If you start seeing cockroaches around your property on a regular basis, it’s a sure sign that an infestation has begun. Not only do cockroaches eat and contaminate food products, they may also carry many pathogens that can cause health issues. They host various types of bacteria, such as staphylococcus, salmonella, streptococcus, and even the poliovirus. Cockroach droppings often contain microbes that live for years and increase the hygiene issues around your Canberra property.