These Public Health Pests endanger our health and contaminate our products, eradication must be a priority to avoid food contamination and disease.

There are mainly two species of Cockroaches which invade our premises in the UK.

German Cockroach -The adult German cockroach (Blattella germanica) is about 5/8 inch long, overall light brown in colour and has wings which cover the abdomen. Commonly known as the steam fly due to the hot environments where it is often found around cookers, dishwashers and boilers. The German cockroach carries its egg case (Ootheca) for around a month then drops it off a day before the eggs hatch. The 8mm long Ootheca contains 30 to 40 eggs which hatch in 2 to 4 days after being deposited.

Oriental Cockroaches: - Females produce egg cases and carry them protruding from the tip of the abdomen for about 30 hours. Egg cases are then generally glued to a surface in a hidden location, usually a warm sheltered spot where food will be available for emerging nymphs. Egg cases are 9mm long, brown, and purse shaped. Up to 16 eggs can be laid in the egg capsule (Ootheca), which consists of two rows of eight eggs each. Immature cockroaches emerge from egg cases in 6 to 8 weeks and require 6 to 12 months to mature. Adult cockroaches can live up to one year, during which females produce an average of 150 young. This cockroach prefers to feed on starchy foods but (like other roaches) will adapt to survive.

The Biscuit Beetle (Stegobium paniceum) is a small reddish to reddish brown beetle which is 2 to 3.5mm in length. The Biscuit Beetle is a member of the "Anobiidae" family which are wood borers and include the common furniture beetle and death watch beetle.

HABITAT: Attacks stored food products, flour, bread, soup powders and spices etc.

The Hide, Bone & Larder Beetle (Dermestes Spp) consists of four main types of Dermestes Beetle, all are a similar shape - 6 to 12 mm in length. The Hide Beetle has a few white scales on the wing cases and is silvery white underneath; the larder beetle has a greyish band with dark spots across the front half of the wing cases.

BIOLOGY: The Dermestes Beetle will feed on any material of animal origin. A dead mouse or bird in a roof space or void can be a source of infestation. In the kitchen, scraps of meat and cheese are consumed. Occasionally items such as fur coats and museum stuffed animal collections are attacked.

HABITAT: Common pests of homes and industrial premises. Often found where meat and bones are processed and in kitchen areas.

Stored Product Insects (SPI) are as the title says insects which attack food in raw material or processed stages.

Food stuffs are attacked by beetles, moths, mites in both adult and larval stages. When developing from eggs to adults a considerable amount of food is consumed, resulting in product weight loss, contamination from insects and larvae, blockages to machinery due to moth webbing, infested grain will be downgraded to animal feed, hides can be damaged by beetle larvae holes and may be rendered valueless. Grain can germinate from heat and moisture produced during insect growth and Bacteria can also grow.

For more information on Public Health pests, please contact us or send a picture of your pest.

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Head Office: Graveoak, East Lancashire Road, Leigh, Lancashire, WN7 3SE

08700 660 999


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