German Cockroach


Name: German Cockroach - Blatella germanica
Lifecycle: Incomplete metamorphosis
Ootheca: Containing between 30-40 eggs with a 2-4 week incubation before hatching.
Nymphs: 5-7 moults taking between 2-6months to reach maturity.
Adults: Live on average for 6 months. Can be distinguished from nymphal stages by the presence of wings.
A small cockroach, 10-15mm long when adult. A pale brown with distinct dark parallel bands running the length of the pronotum. Nymphs and adults as capable of climbing vertical surfaces with ease. Females can be distinguished from males when adult by the broader more robust abdomen, with wings covering all segments of the abdomen. Females will carry the ootheca until the nymphs hatch.
Primarily nocturnal pest, B.germanica prefers a moist, warm environment with an optimum temperature around 30oC. Consequently it has become a common pest of kitchens, larders and restaurants. The British climate does not normally allow for this species to survive outdoors.
Signs of infestation
Faecal smears in conjunction with a distinctive odour are both clear indicators of an infestation. Closer examination of likely harbourages should reveal large numbers of B.germanica grouped together.
Recommended Products – Stingray, Cimetrol, Victor Gel, Nylar 4 EW, Cytrol Forte.
1. The British pest management manual. Section 5, pg 63.
2. ‘The Cockroach, a laboratory insect and an industrial pest.’ P.B.Cornwell. Pg 43
3. Lab notes, Tarakan International.

Click on a recommended solution for this pest below :

One of the ‘flag-ship’ products of the PelGar range, Cytrol Forte is a high strength wettable powder, containing the powerful synthetic pyrethroid cypermethrin. This has excellent insecticidal qualities and good ‘flushing’ and ‘knock-down’ effect.

Victor Gel is a ready-for-use insecticidal gel bait for the control of cockroaches in a range of situations including domestic premises, public buildings, ships and small scale animal housing.

About Us

PelGar International was incorporated in 1995 to develop and supply innovative and novel rodenticide and insecticide products to the global public health pesticide market. PelGar believes that, while the active ingredients used in the industry are common, the target pests and the environment in which they live are very different. Providing cost effective control therefore means that the active substance needs to be available in a wide range of formulations and this is where PelGar’s expertise lies.

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  • Tel: + 44 (0)1420 80744
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  • Email: [email protected]
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