Cockroaches are one of the planet’s most successful insects despite being preyed upon by predatory animals as a food source. So far they have also withstood man’s attempts to eradicate them as they are potential vectors of diseases such as dysentery, gastroenteritis and typhoid. They are omnivorous and their diet includes fermenting substances such as hair, leather, food, wallpaper, faeces, soil, septic dressings.
If you have a cockroach problem, please call me for further help and an integrated treatment plan for the two main types of cockroaches listed below which are found in Britain.
German Cockroach – Blatella germanica (or Steamfly)
As adults they are about 17mm long, light brown in colour except for the head plate which has two dark stripes on it. The (young) nymphs are wingless with a black strip running down their backs.
Their egg capsules called ootheca are oblong, light tan colour and contain around 30 eggs.
They will be carried by the female and will be dropped in a feeding area for the young, who will emerge as nymphs soon after being deposited by the female.
Each egg is carried for 2 ½ - 4 weeks and the cockroaches reach maturity at approx. 3-4 months of age. They will live for about 9 months as adults with the females producing one egg capsule at monthly intervals and producing 4-8 in their life time.
German Cockroach Control
You may not realise that you have a cockroach problem because they are rarely seen during daylight, choosing to emerge from cracks and crevasses, from behind kitchen units and fridge/freezers. They can also be found in other parts of the house, office, food premises. Turning on the light during the night will be a good indicator of the level of infestation you have, but there will be more that you will not be able to see.
German Cockroach Facts
Cockroaches shed skins as they grow
Splash of cooking oil/fat or a crumb of food behind the cooker is a large meal for a cockroach with a minute stomach
Nocturnal – prefer warmer environments
Kitchens will require deep cleaning
An integrated eradication program needed: sprays, traps, poison bait (in specially designed boxes)
I will use the most suitable products on the market to control, then
eradicate your cockroach problem whilst discussing the likely source of the problem.
Oriental Cockroach – Blatta orientalis
As adults they are 20 – 24mm long and have dark brown bodies. They are nocturnal and prefer cooler environments than the German cockroach, for example drains, basements, waste bins, rubbish tips, hotels, hospitals and can be found in homes.
The egg capsules contain 16 eggs which are laid by the female and cemented in a food source area, then covered before hatching several weeks later. The adult cockroach will live for up to 26 weeks and the females produce 5 eggs capsules at monthly intervals during their life time.
Oriental Cockroach Control
As previously described for the German cockroaches but with the added potential of using Space sprays in service ducts and confined areas combined with hygiene management.