Like other insects, the activity and reproduction of cockroaches are affected by temperature. In general, the seasonal fluctuation of cockroaches is the change of population or community quantity caused by temperature change. Cockroaches can carry eggs of pathogenic bacteria, viruses, protozoa, fungi and parasites, and can be used as intermediate hosts of various worms. It has been proved that cockroaches carry about 40 kinds of bacteria that are pathogenic to vertebrates.

Eating habits of cockroaches:

Cockroaches are omnivorous insects with a wide range of food. All kinds of food, including bread, rice, cakes, vegetarian and cooked food, melons and fruits, drinks, etc. I especially like delicious, sweet and oily pasta. Cockroaches have the habit of eating oil. Among all kinds of vegetable oils, sesame oil attracts them the most, so some places call them "oil thieves".

Among sugars, brown sugar and maltose have the strongest attraction to them. Besides all kinds of food, cockroaches often eat other things, such as cotton and wool products, leather products, paper, books and soap in houses, warehouses and storerooms. In outdoor garbage dumps, sewers, toilets and other places.

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