Cockroaches or cockroaches, commonly known as tea ladies, oil stealers, salesmen, kitchen ants and so on, are among the oldest species of insects. They lived on the earth 3,500 years ago. Originated in the African continent earlier, it has gradually spread throughout the world and become an important urban pest.

The cockroach body is flat and suitable for crawling in crevices. The cockroaches at home go out at night and hide in the cracks in the walls, doorframes, furniture, hidden places in bathrooms, cardboard, heating pipelines, animal houses, under aquariums, basements, electrical appliances, gas buckets, flushing tables, drainage pipes, dung tanks, garbage dumps and other places during the day. They run around looking for food, not only polluting food, but also spreading pathogens. Common cockroaches are German cockroaches (1-2 centimeters), American cockroaches (3-4 centimeters), American cockroaroaches (3-4 centcentimeters), Australia cockroaches (2-3 centcentimeters), Australia cockroaches (2-3 centcentcentimeters), brown cockroaroaroaches (2-3 centcentcentimeters), spotted cockroaroaches (2 centimeters), spotted cockroaches (2 centimeters), latent cockroaches, gray cockroaches, seven species, cockroaches, cockroaches, cockroaches, latent cockroaches, latent cockroaches, gray cockroaches, cockroaches_nymph_adult. There may be 16 to 44 cockroach babies in the egg sheath of a cockroach, depending on the species. Most cockroaches are crawling insects that fly only when they are disturbed or move long distances, or when male cockroaches pursue female cockroaches.

Cockroaches belong to the insect class Cockroaches. There are more than 5000 known species, both domesticated and wild.

The common cockroaches in China are: German cockroach, American cockroach, Australian cockroach, brown spot cockroach, black-breasted cockroach, Japanese cockroach, broad-striped cockroach and reddish brown cockroach.

Cockroaches can carry many kinds of pathogenic bacteria, viruses, protozoa, fungi and eggs of parasitic worms, and can be used as intermediate hosts of many kinds of worms. It has been proved that cockroaches can carry more than 40 kinds of pathogenic bacteria to vertebrates, such as Yersinia pestis, Shigella dysenteriae, Paradysenteriae Shigella infecting diarrhea in children, Escherichia coli causing genitourinary tract and intestinal tract infections, Salmonella infecting intestinal diseases and gastritis, etc. In addition, cockroaches can infect bacteria that cause Asian cholera, pneumonia, diphtheria, nose anthrax, and tuberculosis.

The ecological habits of cockroaches are adaptable and fertile. Cockroaches are gradual metamorphic insects. Their life cycle includes three stages: egg, nymph or adult.

Cockroaches prefer to live in warm, humid, food-rich and multi-gap places. They are omnivorous insects with a wide range of food types, especially sweet, oily food.

Cockroaches mainly have two modes of active diffusion and passive diffusion: active diffusion - crawling or gliding and spreading to different places; passive diffusion - mainly using vehicles as carriers to spread around the world.

I. Cockroach control methods

(1) Prevention and control by physical methods

Physical control of cockroaches is simple. Commonly used methods are: sticking, using a piece of sticky paper, placing a bait in the center to lure cockroaches into feeding and sticking. Blanching, in the cockroach habitat gap and corner, pour boiling water, blanching cockroaches and egg sheaths hidden in it. To trap, put a small amount of bait in a glass bottle, such as breadcrumbs, brown sugar and other sweet foods, and at night in the place where cockroaches often live, to lure cockroaches into the bottle.

(2) Chemical control

Cockroach-killing drugs and applications: There are many chemical drugs to kill cockroaches, pyrethroids have a special effect on killing cockroaches, and have a long-lasting effect. They can be used as the preferred drug.

The basic methods of cockroach-killing drugs are: poisoning bait, which is mainly used in the environment without washing, water immersion, moisture and fewer food sources. Drug pen coating is mainly used in dry environment, rich food sources, cockroaches and no impact on the environment. Retention spraying is used in damp environment where poison bait cannot be thrown and medicine pen can be sealed, such as waterway, septic tank, kitchen, washing room, etc. Smoke is mainly used in sewers, septic tanks, garbage tanks and other confined environments.

(3) Environmental control and Prevention

Miscellaneous, chaotic, broken and dirty environment can provide cockroaches with habitat and rich food sources, which is conducive to their survival and reproduction. To control cockroaches, first of all, we should do a good job in environmental hygiene. Everyone should start to clean up the environment, clean up the waste, clean up the cockroach egg sheath, plug the gap, reduce the cockroach habitat, avoid accumulating debris such as old furniture and waste building materials inside and outside the house. Outdoor garbage must be sealed and covered, and cleaned up as soon as possible, often dredging drains, septic pools, and regularly clean up. Please be specific. Industry killing companies regularly kill insects.

II. Requirements and Methods of Drug Application

(1) Apply medicines to cockroaches'habitats and activities, such as indoor kitchens, stoves, cupboards, dining cabinets, containers, bookcases, drawers, warehouses, storage rooms, sundry rooms, garages, sundry heaps, flower pots, wall seams, poultry and livestock barns, etc.

(2) Drug bait should be fewer and more piles, 0.2 to 0.3 grams per pile, 10 to 15 piles per room (15 square meters), 1 to 2 piles per box (lattice) of drawers and cabinets; drug pen sealing should be painted around cockroaches'habitats, the width of drug pen line should be no less than 0.7 cm; detained spraying, spraying diluted liquid 50 to 80 ml per square meter.

(3) After the bait is put in, it is required to be kept for a long time. If it is found that it has been eaten or removed, it should be added in time; the pen should be sealed once every three weeks, two to three times; the sewer, septic tank, garbage tank should be fumigated or sprayed with powder once every 20 to 30 days, three times in a row.

(4) Do a good job of indoor environment management

· Doors, windows and pipelines should be repaired immediately if there are any cracks, so as not to allow cockroaches to sneak in.

· Gaps in walls and furniture should be filled. Furniture should not be placed close to the wall.

· Reduce the number of old newspapers,