German Cockroach

German Cockroach
Size : 1/2 - 5/8"
Color : Tan to brown
Infestation : Near human habitat
Origin : Asia
Questions & Answers : How to get rid of German Cockroaches (20)
Show: 
View As:ListGrid
Sort By:
Sort By:
View As:ListGrid

German Cockroach Control

Effective Roach Control Tip Effective Roach Control Tips

German roaches are by far the most common species of cockroach that is found infesting homes and commercial areas. Not only are they a major nuisance, hard to get rid of, and a frustrating guest that is unwanted in the house, they are also vectors of disease pathogens and are linked to major outbreaks of certain illnesses. Moreover, strangely enough, German cockroaches cause mild to very severe allergic reactions in many people. Despite their name, German cockroaches can be found all over the world and are all too common in the United States.

German Roach Control Products

Roach Baits Roach Control kits Roach IGRs Roach liquid insecticides Roach dusts
Roach Baits Roach Control Kits Roach IGRs Roach Insectcides Roach Killer Dusts
Roach Sprays Roach Traps
Roach Sprays Roach Traps

German Cockroach Identification

German roaches are light brown in color and may even appear tan when they are fully matured. They are marked with two dark brown and almost parallel stripes on their shield that run down their backs. Mature adult German cockroaches are about 13 mm to 16 mm long. Female german roaches are generally darker in color than the male German roaches are. Although adults possess wings, they rarely use them.

The nymphs of German cockroaches are the same shape as adult German roaches except they do not possess wings. The early instars or the younger nymph is significantly smaller in size; however, the late instars or the more mature nymph is similar in size to the fully developed German cockroach. Also, coloration or patterns that are on the back of the nymphs are almost opposite of the mature German cockroaches. Mature adults are mostly tan colored with dark brown patterns whereas nymphs are almost all dark brown to black with pale brown or white margins and a pale brown central area. The ends of their abdomens are uniformly dark in color and there are paler patterns towards the head of their bodies.

Egg capsules of German roaches are a yellowish brown color. They are usually two-toned and the paler side is usually the end that is attached to the female adult. Each egg capsule is about 6 mm to 9 mm long. On average, there are about 15 eggs to 20 eggs on each side of the egg capsule.

The Life Cycle of German Cockroaches

German cockroaches undergo a simple metamorphosis which means they molt as they develop into adult roaches. One average, one female German cockroach will produce about 5 egg capsules. Each egg capsule averages about 30 eggs to 40 eggs so in her lifetime, she can reproduce 150 to 200 offspring. Unlike many other cockroach species, German cockroach females carry the egg capsule with her until it is only about 1 to 2 days before the eggs are ready to hatch. The entire developmental time that it takes for a German roach to mature from the egg to an adult will vary with the circumstances that surround the breeding site. Developmental time can range anywhere between just 50 days all the way to a staggering 215 days. However, on average, it will take a little more than 100 days for one German cockroach to fully develop. This means that on average and under normal conditions, there can up to 3 to 4 generations in just one year and under the most favorable conditions, there can be as many as 6 generations in one year. Once the nymph develops into an adult, it can live for another 100 to 200 days. Although adult german roaches have fairly long life spans, population will consist of mostly nymphs.

German Cockroach Behavior

Although German cockroaches can be seen all throughout a structure, they are attracted to areas of warmth and humidity. They also thrive in areas close to their food and water source. That is why homeowners will typically find them in common areas like bathrooms, kitchens, and areas where people frequently take their food to eat like dens, living rooms, and dining rooms. German cockroaches forage on almost anything with any level of nutritional value. This is why they will feed on all foods and will also feed on things like soap and toothpaste.

Even though they have been seen migrating between houses when the weather is warmer, it is a rare occurrence. German roaches are typically carried into structures via shopping bags, boxes, or secondhand appliances like used microwaves, refrigerators, televisions, and etc. Likewise, although German cockroaches are capable of surviving outdoors, it is unlikely that they will nest or thrive in outdoor areas.

German cockroaches are known to transmit disease pathogens as they forage on human food. They also leave behind feces and other excrement as they travel which is why a German cockroach infestation is detrimental to a household. If an infestation is caught early, it is fairly easy to rid the house of German cockroaches, however, due to rapid reproduction rates, unless they are controlled, it will become difficult to control the invasion without proper insecticides.

How to Get Rid of German Cockroaches

Effective control of german roaches consists of several different methods. The main step is to maintain regular sanitation. German cockroach infestations thrive when there is an adequate food and water source available to them. Food processing areas and areas where food is carried to should be cleaned regularly and all leaking water pipes should be fixed immediately. This is the best preventative measure a homeowner can take. Although standard insecticide application procedures will apply to kill German cockroaches, because of their rapid reproductive rate, it may take more than just a few follow up applications to completely get rid of the infestation. During the initial clean out or inspection of German cockroaches, most of the population can be flushed out with a liquid, contact kill insecticide. Follow up liquid residual sprays can be applied on a regular basis to kill German cockroaches around the home as they come in contact with the spray.

Because German cockroaches are social insects and thrive in communities rather than live in solitude, it is crucial that you attack the breeding site, whether it is directly or indirectly. Using baits are the most effective way to attack a nest. Baits provide a secondary kill effect that will ultimately target the entire colony rather than kill just a single German cockroach on contact. Also, IGRs (insect growth regulators) will prohibit the growth of the population by prohibiting them from maturing. If they are unable to mature, they are unable to reproduce. Therefore, IGRs are an essential part of German cockroach control inside the house and aids in long term control.

Do You Have a Question about this Product? Ask Our Experts!


Sort By :
Q. what do you have available in an aerosol can for german roaches?
A.   For German Roach treatment we have a listing of aerosol cans you may choose from. http://www.pestmall.com/roach-spray/
Was this helpful?
25
Votes
Q. German Roach
I'm not sure but I think I found one...on the second floor on the wall between bedooms and a bathroom. Bought a short-sale that had been a rental property. What is the best broadform roach / bug killer program you can recommend?
A.   Many of the liquid concentrate forms of insecticide will be a broad spectrum insecticide that also kills roaches. Suspend SC and Talstar Pro are among many that are used by professionals.
Was this helpful?
17
Votes
Q. Im not sure where the roaches are coming from I have tore my wolr hous apart and can not find nothing but when I go in to the kitchen I the middle of the nigt they are everywhere that is the only time I see them help me please where are they coming from?
A.   If they are the small German roaches, it will be extremely difficult to find their nest. They nest about 4-5 feet away from a water source and can be in the wall void of the house. The best way to target them is to use cockroach gel baits and other roach baits like bait stations. Apply baits in concentrated areas of infestation (kitchen, bathroom, laundry room) in target places like under the sinks and cabinets, behind the toilet, near water pipes, and etc. Visit this page to select a bait for cockroaches: http://www.pestmall.com/roach-bait/
Was this helpful?
16
Votes
Q. German Cockroaches Control
These guys are everywhere..even the mouldings in the ceiling..what do you suggest is the best way to rid my 1220 sq/ft house?
A.   For German Cockroaches, we suggest using a bait to lure the roaches. Because they are social insects, the roaches will take back the bait to their colony which will kill the entire colony. We recommend our Dupont Advion Roach Bait Gel.
Was this helpful?
12
Votes
Q. German Roach Problem
For the past month I have used the Combat Baits with the Active Ingrediant Fipronil .1% and the Amdro Gel with Hydramethylnon 2.15%. I've seen good results. Since these roach can become bait adverse, should I change the baits to something else or use an IGR? Or include something else in the control program?
A.   Yes, you are correct.German Roaches can become adverse to insecticides.

However, Dupont Roach Gel Baits are designed and produced so that the roaches can not become immune to the insecticide.

Dupont bait gels are known to be very effective. There is a slight delay-kill effect but has a long residual time.
Was this helpful?
11
Votes
Q. how to get rid of german roaches
I just recently moved in with my stepfather only to discover he has a horrible problems with german roaches...i have a 6yr old and a 3 year old who happens to have an alliergy to roaches!!!how can i safely get rid of this problem...without costing me a a whole lot of $$$$
A.  

The most effective type of insecticide against German roaches is a bait type in the form of a gel or a bait station.

Gels can be applied in pea sized amounts that are about 1-1.5 ft apart in areas like under the sinks, behind the toilet, under the cabinets, in the laundry room and etc. The target locations are the bathroom, kitchen, and any other place that provides a good water source. Bait stations are plastic stations that are pre-baited and can be put in corners on the floor, stuck up high in corners, behind and under the refrigerator, behind and under the stove, and etc.

Here are the direct links to the product page:

Advion german Roach Bait Gel

Advion Roach posion bait Station

Was this helpful?
11
Votes
Q. Can I get rid of the german roaches by having my house hold very clean and leaving no food were they can reach?
A.   Roaches in general are attracted to food sources and moisture sources. You may need to treat with chemicals depending on the infestation, but getting rid of food/water sources will help keep them at bay.
Was this helpful?
11
Votes
Q. is gentrol,niban,and delta dust a good treatment for getting rid of german cockroaches?
A.   Instead, we recommend using gentrol, advion roach bait, and delta dust for getting rid of german cockroaches. Gentrol and advion can be used in the same place, but delta dust should be used separately (with gentrol)in areas such as wall voids, under appliances, under sinks, etc.
Was this helpful?
10
Votes
Q. how to kill roach
I had a mixer board fixed and when I got it back it had baby roaches in it. I bought the Boric Acid Insecticidal Dust and used it on the board and in the board. How long does it take to kill the roaches?
A.   Boric Acid is an ingestion poison for crawling insects so it has a delay kill effect. We cannot give you a definitive answer on how long the delay is because it will depend on the insects and when they eat the poison.
Was this helpful?
8
Votes
Q. German roach treatment product
I received a package of Demon WP this week and used on two houses for roach control. I had previously hired this done, and when asked what product they were using, I couldn't get an answer, only that their product worked on everything. It was sprayed inside cabinets, any and all surfaces, for roach treatment. Could you give me your best guess (guesses) as to what product would be used by a pest control company? Thank you
A.  

Thank you for contacting us with your question. Demon WP is a good product that you can use for roach treatment, however we do not recommend that you use this to spray inside of your cabinets.

Inside cabinets we usually recommend the use of gels or a type of aerosol spray. Most liquid concentrated insecticides can be used for roach treatment on most surfaces, but it is always good to take caution before you spray because concentrated liquid insecticides have a residual time of up to 3 months.

When treating the kitchen or food area, you should always make sure all the plates are covered or removed from the area during treatment.

Was this helpful?
8
Votes
>> Read all 18 Customers Questions and Answers
show shortly product
Cart button
Customers Testimonials
Great selection of products at very reasonable prices.

- Richard -
Informational tips will be delivered every week to your email address..