How Are Cockroaches Harmful?

Harmful Cockroaches
Cockroaches are reddish brown in colour and has an unpleasant look. They have been inhabiting on Earth since 70 million years and are believed to be the only creature who can survive even a nuclear explosion. The relation between these creatures and humans have been since long – from the time when our ancestors used to live in caves. So, no home in the world can claim today that their dwelling place had never been infested with cockroaches. In fact, most of the people even face these disgusting creatures on a regular basis. These pests not only bring social embarrassment & fear but also contributes to the deteriorating health of the family. They do not cause any disease by themselves but they carry millions of infectious agents and bacteria, which causes diseases like food poisoning, diarrhoea etc.

Food contamination

Cockroaches eat everything. They feed on dead animals, plants, glue, paper, soap, leather, strands of fallen hair as well as our food. While crawling at night, they even contaminate the food that’s left open by leaving behind their dead skin and hair and depositioning empty egg shells in them.

Inoculation of disease-causing bacteria

Cockroaches while feeding regurgitate their own saliva as well as digestive fluids from their mouth and inoculates the food with bacteria or germs that reside their gut. The bacterium Pseudomonas aeruginosa may multiply extensively in gut of the cockroaches. It may cause various diseases such as digestive problems, sepsis and urinary tract infections.

Cockroach bites

There are a few species, which bite humans. Although this is something rare, it happens. Cockroach bites usually takes place when the home is infested heavily with cockroaches and when the food in the home is limited. Cockroaches are likely to take a bite of eyelashes, fingernails, hands and feet. The bites cause lesions, swelling and irritation. However, cockroaches usually won’t bite if they get an access to other food sources like garbage cans and others.

Entering body parts

Cockroaches not only infests home but also enters body parts. In many cases, cockroaches entered body parts like ear and nose of humans while they were asleep. Small cockroaches have even been found to have entered body orifices like anus, urinary meatus and vagina when the person was deep asleep.

Food poisoning

Cockroach infestation plays a big part in food poisoning. The insect is after all a home for bacterium Salmonella and that causes food poisoning and typhoid.


Cockroaches can cause allergies. Their body parts and saliva secretion actually have hundreds of allergens and that may cause humans to suffer from undesirable reactions like sneezing, watery eyes and skin rashes. Cockroach allergens can even cause asthma attack.

If you think you have identified a cockroach infestation in your home in Melbourne, don’t delay. Hurry up and get in touch with a company that specialises in cockroach pest control in Melbourne to discuss inspections and treatment options.


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