Avainlippu

German cockroach (Blattella germanica)

Russakka

Identification

The German cockroach is 10–15 mm long, light brown in color, with two dark stripes running along its head. Adults have wings but rarely fly. They move quickly and are most active at night. During the day, they hide in narrow, dark crevices.

Typical signs:

  • Activity in kitchens or bathrooms, especially at night
  • Small black droppings on surfaces, inside cabinets, or behind appliances
  • Musty, unpleasant odor in heavy infestations

Habits

German cockroaches thrive in warm, moist, and food-rich environments such as:

  • Kitchens, behind dishwashers and refrigerators
  • Bathrooms, near pipes and radiators
  • Trash areas and inside household appliances

They eat almost anything: food scraps, bread crumbs, grease, and even soap or paper. Reproduction is rapid – one female can produce hundreds of offspring per year.

Pest control

Effective cockroach control requires a professional approach, as they hide well and multiply quickly. A pest control expert will locate hiding spots and use gel baits, traps, and aerosols if needed. Multiple visits are often necessary.

A professional pest controller will:

  • Conduct a thorough inspection and locate nesting sites
  • Apply gel bait, traps, and if needed, aerosols
  • Follow up with additional visits to ensure effectiveness
  • Provide guidance on cleaning, sealing entry points, and preventive actions

DIY solutions like sprays and traps usually aren’t enough – cockroaches are elusive and resistant to many products.

Summary

The German cockroach is a resilient and fast-breeding pest that easily infests kitchens and bathrooms. Professional pest control is the safest and most reliable way to eliminate the entire colony and prevent reinfestation.

Pest control visits from 149€