It can accidentally invade homes, cabins, cottages, in or near wooded areas. All rights reserved. The University of Minnesota is an equal opportunity educator and employer. Home Insects Household insects Insects that infest homes Cockroaches. Quick facts Cockroaches hide during the day and become active at night.
Cockroaches carry diseases that can cause food poisoning or diarrhea. Their saliva, feces and cast skins can irritate allergies and asthma in people, especially children. Cleanliness is very important to reduce cockroach infestations. It is best to hire a pest management service to treat them. How to keep cockroaches out of your house Take precautions while moving When moving, use boxes and packing material from a place free of cockroaches.
When packing, watch for cockroaches and their egg capsules. Remove and destroy any that you find. Take all boxes out of the home at night and store in a place without cockroaches. If storing boxes overnight in infested buildings, keep them off the floor and away from walls by placing them on chairs or tables. During winter, you can store boxes in unheated locations such as garages.
In your new home, watch for egg cases and cockroaches that may have survived. Remove boxes, newspapers and paper bags Corrugated cardboard boxes are a good source of cockroach infestations. To confirm you have cockroaches: Place sticky traps so that they are tight against edges, where walls meet floors. Place traps in areas where cockroaches are likely to occur, such as in cupboards and around refrigerators, stoves, and sinks.
You can reduce the number of cockroaches by getting rid of places they like. Remove corrugated cardboard boxes, newspapers, bags and other unnecessary clutter. When storing items, leave space between packages. Use caulk to seal spaces and cracks where cockroaches hide.
Concentrate on areas where cockroach numbers are the highest. Seal spaces where plumbing or electrical wiring goes through walls with steel wool or other rough material. Put covers escutcheon plates on points where plumbing enters the wall, to restrict movement of cockroaches.
Keep your home clean If you limit access to food and water, cockroaches cannot survive and reproduce. Keep all food stored in a refrigerator or in insect-proof containers made of plastic, metal or glass with tight-fitting covers.
Do not leave pet food and water out overnight. Wash your dishes, pans and utensils as soon as you are done using them. Remove all food or spilled drinks from counter tops, and clean counters, sinks and tables with soapy water. Vacuum floors and all cracks and crevices to remove debris and food. Take garbage out daily in closed plastic containers.
Keep waste containers clean. It is important to be sure you are dealing with roaches and not a beetle infestation as the treatments are very different for these two pests. Roaches grow in size after they hatch from an oothicae otherwise known as an egg case. Depending on the species, immature roaches can vary from 2mm-5mm.
Adult roaches can vary in size from about. Knowing the different sizes of the roach during each stage of its life can help you perform a successful cockroach inspection. Roaches are flat and oval shaped Roaches have 6 legs Roaches have two antennae, which will vary in length depending on species Roaches have wings, though not all roaches will use them to fly.
Roaches can be light tan to dark brown. Some species have have stripes or bands on their backs or heads. Female American cockroaches produce egg capsules inside their bodies and deposit them from the ends of their abdomens. They then use secretions from their mouths to glue down their egg cases. Dark brown capsules stuck to walls or the undersides of objects in hidden areas may be American cockroach eggs. These pests have the same flat, oval shape as other cockroaches, but their pale brown color and the lighter bands on their wings and abdomens help to distinguish them.
Male brown-banded cockroaches have light brown wings that cover their abdomens. Females have short wings that leave half of their dark- and light-banded backs exposed. Males will readily take flight when disturbed, which can aid in identifying them. German, American, and Oriental cockroaches rarely fly. As pictured here, brown-banded cockroaches frequent many of the same cluttered spots as other roaches, though they choose dry areas over damp ones.
In addition to its small size, the German cockroach is characterized by a pair of dark stripes that run parallel to each other down the back of the insect.
The most common species in houses, apartments , and businesses, the German cockroach is also one of the smallest. The pests grow to about a half-inch in length and have light brown bodies with darker brown marks. These pests may occasionally flutter their wings to break a fall, but they prefer crawling to reach their destination. However, German cockroaches have smaller, solid-colored hind legs and tend to scurry across surfaces rather than jump.
German cockroaches have six legs covered in fine spines. The pair of legs furthest from the head is the longest. These hardy pests can continue to move and reproduce with a lost limb and regrow legs in a few months.
While most baby cockroaches look like tiny adults, variations in their appearance may help pinpoint the species. Wingless German cockroach nymphs are smaller and darker than adults, though they still sport two, distinct stripes. Male and female German cockroaches feature a few visible differences. Males, such as the one in the top photo, have narrow, tapered lower bodies.
Females are stout with more rounded abdomens than males. Pictured here within cardboard debris, German cockroaches are small enough to squeeze into even more out-of-the-way places that other roaches may not be able to reach. German Cockroach Ootheca Eggs. German cockroach egg cases are less than one-quarter inch long and pale yellow or brown with a ridged surface. These details distinguish them from smoother, darker Oriental and American cockroach egg capsules. Female German cockroaches carry capsules jutting from their abdomens until the eggs are ready to hatch.
When the young are about to emerge, females deposit egg cases in a sheltered crevice. These egg-laying practices make it especially tough to notice a German cockroach infestation in the early stages. These insects appear reddish-brown to black and grow to roughly one and a quarter inches long. Both sexes also tend to appear greasy or shiny. Oriental cockroaches, which people sometimes call water bugs, prefer cool, moist places. However, these pests lack the large front claws of a true giant water bug.
Unlike German cockroaches, which rarely live outside homes, Oriental cockroaches are indoor and outdoor pests. Since this species has no body markings, observing their habits can separate them from similar-looking smokybrown cockroaches.
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