Oriental Cockroach
The Oriental cockroach (Blatta orientalis), often called the "water bug" or "sewer roach", is a dark brown to black cockroach with a glossy body. It tolerates cold better than other species and thrives in damp, cool places: sewers, drains, cellars and foundation cracks.
Identification sheet
Health risks
A carrier of pathogens from sewers and garbage, it contaminates food and surfaces with bacteria, fungi and viruses. Its presence gives off a characteristic musty odour.
Signs of infestation
- Unpleasant musty odour (pheromones) in damp areas
- Black droppings about 1 mm long
- Dark, glossy cockroach near drains, the basement or the foundation
- Moults and oothecae in sheltered corners
- Damage to food products and packaging
Prevention tips
- Eliminate moisture: fix leaking pipes, dry out cellars
- Keep water in floor traps to prevent dry drains
- Screen drains and sewer accesses
- Seal foundation cracks, baseboards and air vents
- Remove decomposing organic matter near the building
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