Crawling Insects Cambridgeshire

Greenthink is able to offer treatments for all crawling pest species. We can also provide organic treatments, preventative treatments and proofing to prevent a problem occurring in the first place. Our qualified and experienced technicians have an average of over 25 years’ experience in such problems and our friendly office staff can offer advice and understand that these problems require a quick response. So if you have a problem with any type of crawling insect including ants, fleas, bed bugs or cockroaches in the South East, East Anglia and the Midlands, contact Greenthink and feel free to ask that an unmarked van visits you today.

Solving a Problem with Crawling Insects


Greenthink provide:

  • Quick response
  • Experienced technicians with free advice on prevention
  • Preventative proofing solutions
  • Organic options and methods which minimise environmental impact
  • Competitive prices available over the phone
ants crawling on a house

All our services are charged when the work is complete, so you can be confident you are only charged for the service carried out.

We will always try to provide a cost for our service over the phone, and if we can’t, we offer a free survey and quotation, so you can decide. We are experienced in solving infestations of many types of crawling insect species through our work for the food Industry, so if you can’t identify the pest you are dealing with from the guides below, with feel free to call our experienced office staff for help.


Garden Ants – Lasius Niger

Adult ants are black or dark brown and the workers are generally 4mm long. Queen ants lay eggs which hatch into grubs after about 3 or 4 weeks and are fed by the worker ants. After another 3 weeks they become larvae, which takes about 2 weeks for the adult ant to develop. Queens have wings while workers do not, are about 5mm long and can live for years. In late summer male ants will grow wings and leave the nest never to return, this will happen simultaneously across different nests, and is known as swarming. Worker ants tend to forage for sweet or protein based foods, seeds and other insects to take back to the nest. Nests are generally in the ground, often under paving slabs or in foundations of buildings which can lead them to appear indoors. Insecticide treatments, ideally made to the nest directly or to the path the ants are following will resolve the problem. If this is not possible an insecticide based food designed specifically for ants will be taken back to the nest by them.



  • Booklice are unusual in that eggs are not fertilised because all adults are female. Eggs are hatched into nymphs which become adults over between 3 and 8 weeks.
  • Adults are 1-1.5mm long, light brown and live for about 6 months.
  • They are generally found in homes and like humid areas like kitchens so can also be found in food preparation businesses, feeding on flour and cereal products. This can lead to contamination of food.
  • Fleas


    Fleas are hatched from eggs into larvae, which then become pupae before emerging as adult fleas after about 3 weeks. The amount of time can however depend on the level of activity in the dwelling as they respond to the vibrations caused by activity. If a dwelling is unoccupied it can take months. Adult fleas have a rounded head, large back legs, are dark brown and about 2mm long. Fleas live in the hair of the host, generally cats or dogs, and feed from them. If the host is removed from the property or a flea treatment is carried out to resolve the problem, fleas will then search for another host and at that point tend to bite humans. Shop or vet bought flea treatments are rarely effective because they are sold in a fraction of the quantity required to treat the average house, so usually it is actually cheaper to employee a professional pest control company who is able to offer the most appropriate treatment for the problem.

    Carpet Beetle

    Carpet Beetle

  • Carpet beetle are hatched from eggs into larvae which pupate until adults emerge.
  • Adults are 2 to 3mm long with black, white and orange flecks on a ladybird shaped body, and wings, seen only when airborne.
  • While adults eat nectar and pollen, it is the larvae which cause damage by feeding on animal fibres such as fur, wool and feathers affecting items such as carpets.
  • Carpet beetle are often found to infest properties where there are bird nests in loft areas.
  • Bed Bugs

    Bed Bugs – Cimex Lectularis

    Bed Bugs hatch from eggs into nymphs and then grow into adults about 5mm long. They have the size, shape and colour of an apple pip, though transparent and flat when in need of a feed, dark and fat afterwards. Bed bugs can drink seven times their body weight in blood but have also been known to survive for 18 months without a feed. Bed bugs inhabit cracks and joints in furniture, skirting boards and sockets etc and often excrete their droppings around these areas which resemble black spots but are digested blood. Bed bugs are nocturnal and will appear from their hiding places when it is dark, they are in need of a feed (normally every few days), and when a high concentration of carbon dioxide is noted in the air (mostly when the room has a resident asleep). Bed bugs often infest hotels and guest houses because of the large numbers of people moving in and out enabling them to be easily spread via guest luggage. They can also be spread via infested furniture. Bites tend to cause an allergic reaction and there are cases of bed bugs transmitting diseases but not in the UK. Control of bed bugs has become difficult because they have been under treatment for over 100 years leading to resistance to commonly used insecticides. The problem in the UK has also worsened considerably since free movement from East Germany became possible because there was far less control over infestations there, than in the rest of Europe up to that point. Greenthink has developed guaranteed treatments for bed bugs where national companies have failed, and continue to do so on a regular basis, and now offer also a preventative treatment ideal for hotels which we are also able to guarantee.

    Oriental Cockroaches

    Oriental Cockroaches – Blatta orientalis

  • Oriental cockroaches hatch from eggs laid by the female into nymphs which grow into adults over a period of 24 to 130 weeks.
  • Adults are between 20 and 24mm long, dark brown with wings although these are larger on the male than the female, and the male has a narrower abdomen. Adults live for between 1 and 8 months depending on the temperature of their environment.
  • Oriental cockroaches favour damp cool areas and so are found more often on lower floors such as basements and near water sources, they will hide in cracks and crevices which is assisted by their flat body shape.
  • Silverfish


  • Silverfish hatch from eggs into nymphs which grow into adults after moulting up to 10 times, which takes up to a year.
  • Adults are a silver-grey colour and up to 2cm long.
  • Silverfish prefer damp areas such as kitchens and bathrooms and hide during the day in cracks and crevices but come out at night.
  • They sometimes cause damage to textile and paper-based materials.
  • German Cockroach

    German Cockroach – Blatella Germanica

  • German cockroaches hatch from eggs into nymphs after about 17 to 35 days. It takes 6 to 31 weeks for nymphs to reach adult size. Adults are 1-1.5cm long
  • Adults are light brown; the female has a wider abdomen and both males and females have wings and long antennae. Females live for around 5 months, males for slightly less.
  • They prefer humid conditions like kitchens and laundries, near a water source.
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