Pests indoors and at home. Here you will find valuable tips on how to avoid damage to insects and pests that eat on the house.

Pests and insects eating on the house

Pests and insects eating on the house

Due to long-term and effective control, we are excited about severe pests in Sweden, through insurance and other agreements, we are also protected from overly noticeable economic losses due to attacks from parasites. But this does not mean that we can settle down and believe we are fully protected. In your house, only you can find out if you have been visited by unwelcome guests.

Wood is one of our most durable building materials. Here in the Nordic countries there are wooden buildings that were built more than a thousand years ago and still work impeccably. That being so depends largely on the quality of the work, its maintenance and the way the buildings are protected against parasites. Only among the insects are thirty species that eat or otherwise damage wood. The wooden houses we are building today hardly last year 3000, but there are, of course, grounds to prevent parasites from unnecessarily shortening the life of the buildings.

The most important condition is to detect possible attacks as early as possible. Although, thanks to insurance, we do not usually have to pay for either the remediation or any repairs in cash, the petty presence of the pests is a discomfort. In addition, if they can be held, they can in any case cause major concern to the homeowner, which is not covered by insurance. In the vast majority of cases, pest control in a building is not something that you should take care of yourself. It is so complicated and requires such knowledge that a never-ending intention can even exacerbate the situation. In this situation, as a "salt in the wound", you may lose the insurance right.

However, it is important that you keep your eyes open to discover such traces that indicate attack on one or the other battle. Even that requires some knowledge. Some attacks on attacks are hardly noticeable until such a late stage that the damage has already occurred - simply because they do not recognize the characters and therefore neither see them. The risk of getting pests in the house is greater in older than in younger buildings, but you never feel completely sure.

Immediately report a suspicion to your insurance company or to the sanitation company with whom you have contracted. Perhaps most important of all: Make sure you have some kind of insurance cover for such damage! Even the word of consolation may be in place. Most wood-eating beetles are quite harmless!


If there is anything about anobies in your fight agreement, it's about beetles, which in Swedish are called wood rodent. They belong to the most common wood-eating insects. There are more species, most between 5 and 7 mm, brown or black. Another common name on woodcutters is "deadlock". It comes from the signal sounds that the male and female sent to each other during the mating game by tapping the wall walls inside the tree.

Most commonly, however, the name is "wooden box", which actually fits less because the insect is a beetle and often be confused with a little fly. The name of the wooden box will surely be that the animals drill small, circular "worm holes", from which it then "dulls" drunk flour, a mixture of wooden remains and excrements, in the form of small worms.

Strong woodcutters

Strong woodcutters live among others furniture and wooden constructions. Because the wood must have quite a high humidity and the temperature is just over 20 degrees to develop the larvae, this dough usually occurs in the kitchen, basement and warm outhouse. If you have a holiday home with an old stable, you can be almost sure to find streaky woodcutters there.

Soft Wood Detector

Soft wood detector is called because it has a smoother headache than other close relatives. It is found in almost all construction works with bark residues. For example, if you put a panel over such wood, it is high risk that the panel is perforated by small airplanes. Soft wood chippers also rub out through the roofing board and can therefore indirectly cause moisture damage.

Envis triggers

Envis triggers appear as a warning signal. It is only in red-damaged wood, which with incredible consciousness turns into a fine powder. If you're looking for a black-shimmering Envis woodcutter, you should immediately look for the cause of the moisture in your house.

Shredded Woodcutter

Shredded Woodcut, our biggest wood igniter, is almost exclusively in ektimmer. Also, it is a moisturizer, because it can not live in dry wood.

Comforter Woodpecker

Belongs to the less common, but is usually the easiest to recognize on its large cam-shaped antennas. It's hardly anything else than hardwood


A windy and quiet, hot day, you can listen to if you have a house bucket in your house. The larvae rattle with a weak but audible rasping sound.

Worth knowing

Just the name husbock gives many homeowners shakes. But it's only if you live in the southern or southeastern parts of the country as there is reason to grow up. In Western Sweden and Norrland, the house block is not present. Humlemott is an insect that most bothers bumblebees and goats.

For humans it is quite harmless, except when it rubs into foam plastic and plunges there. Bumble bees can build in insulation material. No harmful insects eat brick, concrete or cement, but murmur can rub away dirt and jointing to get wintering spots for its larvae. After murbina, twigs, spiders and gray bugs come as self-worthy tenants in the cavities.

A fooling house bucket

The first signs of house buckling in the house are often about 5 mm in size, oval and a bit of fringe airhole and rather coarse shavings mixed with cuttings. The attack could then have been about 10 years without any external signs. Nevertheless, the damage can be very extensive. The husbock is so effective that often only the kernel and any crabs are undamaged.

A single housebucks can raise up to 400 eggs and when the larvae are hatched for a couple of weeks, they immediately begin to drill into the wood. Often they go so close that only one almost paper-thin layer remains. How many years the larva takes on to get fully developed depends a lot on the temperature. Under + 25 ° there are no full-grown housebooks active. The houseboat is the woodwindsman who makes the most costly damage. Watch out with old timber, which is often occupied by husbock. Ceiling beams are most attacked, as it is hot under the ceiling, but house buck can also winter in, for example,

Immediate Bag

If you meet a large beetle with long antennas, it does not need to be a so-called long angle. It is a beetle that does not really belong in Sweden.


Skeppsbaggen is an immigrant from North America, who has acquired homeland rights over virtually the whole world. With us it can be found in formwork, in damp basements and similar spaces, where it already attacks damaged wood. If it has been in the floor, must the affected parts be replaced? preferably against pressure-impregnated wood.

Splintbagger and vivlar

Splinterbagbags are 5 mm long, slender beetles, leaving behind a powder-free drill flour and only millimeter-round airplanes. The rugs are most common in the splinter, the watery wood near the bark, with large-spruce leaves, eg ash and oak. The modern, fast wood drying has made the splinter bins common. They also like to follow imported wood. Look up with parquet of exotic wood.

Splintbaggar are also common in screen walls, trellis and garden furniture by bamboo, but usually it takes many years before damage occurs. For homeowners, the Vivlar are even more harmless, because they are only found in rotten wood. But the Vivlar are many about 40,000 species and thus the largest family in the world of animals.

A pair of steaks

Both woodwood and blue woodwood are common in Swedish forests, but like most other steaks they are harmless, with an exception:


Hornteklar, who entered the house would like to go out again. They can then rub through insulation layers and further through eg. a ceiling and out through the roofing. They run through the lead plate. Doing enough flight holes is the moisture migration.

Acidic iron

The acidic texture only rubs small pots in woodwork, usually in newly built houses. If you discover such shallow pits, it is a reminder that you also have to deal with the garden facility. When you get rid of such weeds like junk and acids, the larvae of the acidic larva nowhere have the way to get along, and you will get more beauty spots in the form of bites in the house.

Three harmless rugs

Have you built a new wooden house, you can be almost sure that in the first few years, from time to time get a company of a snowbag. Often it falls surprisingly from the ceiling. The snowbag really lives in sick or dead spruces, but is apparently attracted indoors by fresh wood dust. Unfortunately, it does not cause any damage. But it's more than centimeter and quite impressive. Nor are the significantly smaller barkers any real pests in buildings.

As the name suggests, they usually stand between bark and wood, where they eat typical and rather fascinating patterns. Splashy ash drills come inside swarms, but since neither or other barkers can attack sawed wood, they are not much to attach to.

Woody ants

It's not very nice to get ants in the house . They soon find the way to food in kitchens and pantries. But ants can also attack woodwork.

Black-glossy woodcream

Black-shiny woodcrumbs can also work freshly and break down the loose parts of the tree.

The horse mire

The horse mire or stockmyran can stand on the beams in one House. As a single fertilized queen can give rise to an entire society, for example, you can build a horse-myro colony, such as a log house, which can be a major inconvenience. The horse mire is the largest Swedish mire. Not least in the wooded areas, it can establish itself in hustimmer and leave such cavities.


Insects that usually specialize in living in woodwork can also accept some other building materials. Treadmills, eg. can rub slopes in insulation boards and completely or partially perforate such material. There are insects that have so powerful jaws that they can eat through metal. Hornet and blue-throat larvae, such as being trapped under a plate roof, can bump up such large airborne holes in the coating that moisture and empty water can penetrate and cause fungal and rot. Wood-catching insects can also eat through electrical wiring and set up with short circuits, ie if you have the right bad luck.

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