What is the difference?
“Roach” and “cockroach” generally refer to the same thing in everyday language: cockroach species that occur indoors as hygiene pests. The key difference is to the Wood cockroach: Cockroaches can establish themselves and reproduce permanently in buildings, whereas wood cockroaches live outdoors and only occasionally wander into homes.
Cockroaches / roaches (e.g. German cockroach, Oriental cockroach) are hygiene pests that prefer to stay in warm, humid indoor areas. They feel particularly at home in kitchens, pantries, hotels and food businesses.
These insects are active at night, hide in cracks or behind appliances during the day, and can transmit pathogens such as Salmonella or mold spores.
Wood cockroaches, on the other hand, are harmless. They live in nature - for example under leaves, stones or tree bark - and only occasionally wander into homes. Unlike cockroaches, they do not survive permanently there and do not reproduce.
Difference between cockroaches and wood cockroaches: The most important characteristics
| Characteristic | Cockroach / roach | Wood cockroach |
| Habitat | Indoors (kitchens, bathrooms, basements) | Outdoor areas (leaves, gardens, forests) |
| Behavior | active at night, avoids light | active during the day, moves toward light |
| Danger | carries germs, hygiene pest | harmless |
| Survival in the home | possible permanently | not possible |
| Reproduction in buildings | yes, under suitable conditions | usually no |
| Typical places found | Kitchens, pantries, dishwashing areas, appliances, cracks | Windows, walls, balconies, patios, entrance areas |
| Appearance | light brown to brown, often with dark longitudinal stripes on the pronotum | usually amber to light brown, often without distinct dark longitudinal stripes |
| Body length | approx. 14- 30mm | approx. 9 - 15mm |
| Ability to fly | both sexes incapable of flying | both sexes capable of flying |
Tip: If you see a cockroach during the day that actively reacts to light, it is probably a wood cockroach. If it flees instead and hides in dark cracks, it is more likely a cockroach - and that is a warning sign.
How do cockroaches get indoors?
German cockroaches are often brought in unnoticed - for example, via goods, cardboard boxes, luggage, or used items. In apartment buildings, they can also migrate from adjacent rooms and spread throughout the building.
Source: German Environment Agency – Cockroaches
Wood cockroaches on the other hand, usually enter homes accidentally from outside. They generally do not reproduce there.
Why German cockroaches are dangerous
German cockroaches are considered hygiene pests. They can transmit pathogens, contaminate food, and trigger allergies.
An infestation often remains hidden for a long time. Cockroaches seen during the day may indicate that the infestation is already more severe or that the hiding places are overcrowded. In addition to live cockroaches, droppings, shed skins, egg cases, or an unpleasant odor may indicate German cockroaches.
Common mistakes in cockroach control
A common mistake is misidentifying the species. If a German cockroach is mistaken for a wood cockroach, an infestation can spread. If a wood cockroach is mistaken for a German cockroach, unnecessary measures may be taken.
Removing individual visible cockroaches is not enough in the case of German cockroaches either. They live hidden away and often only become visible when the infestation is already more severe.
Un targeted sprays are also problematic. They can disturb cockroaches and make control more difficult. A structured approach involving identification, monitoring, hygiene, sealing, and suitable control measures is more effective.
What helps against wood cockroaches?
With wood cockroaches, prevention is usually the priority. Since they come from outside, potential entry points should be reduced. These include open windows, gaps under doors, ventilation openings, and cracks.
Insect screens are a simple and effective measure. Outdoor areas directly around the building should also be kept as free as possible of leaves, wood debris, and dense vegetation.
Individual wood cockroaches indoors usually do not need to be treated like an infestation of German cockroaches. However, accurate identification remains crucial.
What should I do with food and contact surfaces after finding a cockroach?
Food and animal feed should stored tightly sealed Open food that may have come into contact with cockroaches or their droppings should no longer be used as a precaution. It is also advisable to clean affected areas thoroughly, especially food cupboards and surfaces behind and beneath kitchen cabinets. The German Environment Agency emphasizes that cleanliness is important to deprive cockroaches of their food source.
Source: German Environment Agency - Cockroaches
Effective control with Advion Cockroach Gel
If you have discovered cockroaches or German cockroaches, it is important to act quickly. Home remedies or sprays rarely help because they only drive the insects away - they do not eliminate them.
A targeted, professional method is the use of a bait gel.
We recommend Advion Cockroach Gel - a highly effective gel containing the active ingredient indoxacarb, specially developed to combat cockroaches.
Benefits of Advion Cockroach Gel:
- Works directly in nests: cockroaches consume the gel and carry it back to the colony.
- Easy, discreet application - ideal for kitchens, bathrooms, basements, and businesses.
- Odorless, long-lasting, and effective even in cases of heavy infestation.
- Suitable for professional and private use.
Application:
- Apply small dots of gel (approx. every 30 cm) along pathways, behind appliances, or in dark hiding places.
- Areas near heat sources (e.g. stove, refrigerator, heater) are particularly effective.
- Do not use other insecticides at the same time - this can repel the insects and impair the bait's effectiveness.
- The effect becomes noticeable within a few days, while complete eradication usually takes a few weeks.
Tip: Even after visible success, you should continue using the gel as a precaution to prevent reinfestation.
Conclusion
Not every cockroach is equally dangerous - but every sighting should be taken seriously. While wood cockroaches are harmless, German cockroaches and cockroaches can pose health risks.
With Advion Cockroach Gel, you have a proven professional product at hand that works specifically in hiding places and effectively and sustainably eliminates the infestation.
This is how you can quickly restore hygiene, safety, and peace of mind in your rooms.
