Flies – bite problem. How to fight flies? Examples of measures and prices

When it gets warm outside, flies come to life. Hated by inhabitants of towns and villages. However, on farms, especially those where animals are kept, they are quite a challenge. Their greatest concentration occurs in livestock rooms. They are not only a burden to the animals, but also to the hosts. We advise how to combat them.

housefly (Musca domestica) is a common insect found all over the world. The lifespan of a single individual is about 4 weeks. In farm buildings, it can hibernate in a state of reduced life activity. Despite the relatively short lifespan, flies can cause many problems. Plagued animals live with both physical and mental disadvantages. This unfavorable situation significantly reduces the efficiency of livestock farming. Dairy cows produce smaller amounts of lower quality milk. Bacteria and viruses transmitted by flies can enter the milk via milking equipment as well as via liners.

It is estimated that the decrease in the cow’s milk yield can be up to 20%, and in the case of fattening, the weight loss can be up to 6 kg / head. Not only milk is of lower quality, but also meat. The inferior quality of meat from cows that are harassed by flies is related to the constant production of stress hormones such as ACTH, adrenaline and others. It should not be forgotten that due to a large number of flies, the reproduction of cattle deteriorates significantly.

The presence of flies on the farm is not only a nuisance for animals and a negative influence on reproduction, but also a serious epidemic threat. Based on the research, it was found that a fly can carry up to 6 million microorganisms on the surface of the body, and up to 30 million microorganisms in the gut. Among these microorganisms are those that cause very serious diseases, such as typhoid, cholera, tuberculosis, polio, salmonellosis, anthrax, etc. For animals, the most dangerous are: dysentery, salmonellosis, colibacillosis, brucellosis, tuberculosis. In dairy herds, a large number of flies can contribute to mastitis. It has also been found that flies can transmit the spore stages of parasites. The nuisance and threat of the presence of flies makes them unacceptable on the farm.

In warm and sunny places

Flies are insects that prefer warm and sunny places. Their high density is mainly found in piglets, calves, radiators, lamps, sow udders, etc. Flies are often found in large numbers in feed stores, where they feed. These insects feed on liquid substances and take hard food, e.g. food, after having dissolved it with saliva – initial digestion. Flies eagerly eat food that contains a lot of flavourings, sweeteners or fats. The feed containing these components is mainly intended for young animals, such as piglets.

Dung is often visited by flies. In addition, it is an excellent place for their reproduction, photo P. Kardasz

Flies often accumulate in manure storage areas. This is due to the fact that after reaching sexual maturity they lay eggs in the feces, especially pigs. The period of egg storage by the female is 2 to 5 days. The female lays about 100 eggs at a time, and 600 to 2000 eggs throughout her life. It is estimated that 15,000 larvae can develop in 1 kg of natural pig manure. Due to the large number of flies and the high fertility, a population that is larger than all of humanity is born every day. Therefore, keep the business in order and apply effective control methods. When fighting flies, one should not forget the safety of humans and animals.

Prevention in the first place

To reduce the number of flies on the farm, one should follow the principle: “prevention is better than cure”. To prevent the occurrence of flies, hygiene in the stables must be given priority. A recommended method to reduce the occurrence of flies is the use of effective micro-organisms in feed and water. Their addition reduces the formation of gases in the livestock rooms that attract flies. A good method to prevent the “entry” of flies into the stables is to place nets in the windows. Systematic replacement of litter is another important element of prophylaxis in reducing the occurrence of flies. In a situation where the preventive methods are insufficient, other non-chemical methods should be used, such as: glue, mousetrap or insecticide lamps. Insect killer lamps work by emitting light at wavelengths that are attractive to flies. The commercial offer includes two types of lamps. In bright lamps, flies are electrocuted, while in devices equipped with a sticky insert, insects adhere to the non-drying glue. Lamps perform their task best in smaller spaces.

When using lamps, remember to place them in the right place, otherwise they will not perform their task or the efficiency of such a device will be incomplete. When using lamps, remember to place them away from windows, in a dark place and where insects can accumulate. Such placement of the lamps will make the insects react to the emitted light. Corridors, for example, are a good place to place lamps. The lamp should be hung at a height of 2-3.5 m. When hanging the lamp, keep in mind that flies like to stay on the ground, where they find food. So the lower the lamp is hung, the better. When buying a lamp, choose one that is adapted to the size of the room. On the store shelves there are lamps for small rooms, with an area of ​​​​20 to 45 m2as well as larger ones – with an area of ​​​​180-200 m2† A good and increasingly common way to control flies is the use of pheromone traps, which trap insects. These traps look a bit like a bucket with a pheromone in it.

Prevent development

When controlling flies, bet on products that will prevent the growth of these pests. Preparations are available that effectively control flies in the larval stage. These preparations can be used in various places, eg pigsties, chicken coops, cowsheds, landfills, etc. To fulfill their task, they should be used systematically during the breeding season, ie until the flies no longer come into the rooms. If the preventive and non-chemical methods are insufficient and the flies are present in large numbers, a more radical solution can be used, namely reaching for chemicals. Chemicals are toxic, so remember to take precautions when using them, both for humans and animals. The manufacturer’s instructions on the product label must be followed strictly. Such a procedure makes the procedure effective and safe.

Fly control compositions are in the form of water emulsions, powders, sprays, tablets, concentrates, suspensions, paints or granules. The fastest method of controlling flies is spraying, which should be started from the frames, windows and sills, not forgetting the manure channels, ie places where flies are most numerous. For example, powders or granules should be scattered on the floor. Unfortunately, insects can become resistant to the preparation used too often. To avoid this, it is necessary to change the active substances of the preparations. After 1-2 uses of one preparation, another must be chosen, based on a different active ingredient. If you want to fight flies as effectively as possible, you should use preparations that fight both adult insects and larvae.

Examples of preparations for fighting flies on the farm

Maggots 2 SG – a preparation in the form of granules, it can be used in various forms: pouring, spraying, sprinkling. The active substance of the preparation is cyromazine. Designed to control flies in barns, stables, pig houses, in manure, bedding, etc. It controls fly larvae. The price of a pack of 5 kg ranges from PLN 350-380.

QuictBayt WG 10 – granules for liner in traps; you can also, after making a special suspension, place or paint specially prepared plates on which flies land. The active substance of the preparation – imidacloprid. The preparation works in a wide temperature range; according to the manufacturer – even at 30-35 ° C. It is sold in packages of different sizes and the price varies from approx. 22 to approx. 90 PLN.

Effect Ultimum – emulsifying concentrate. It contains three active substances: permethrin, tetramethrin, piperonyl butoxide. Works after 24 hours. on the request. The preparation should be used in private or public areas on smooth surfaces, indoors, in vehicles transporting animals, etc. Intended for professional use. Price, depending on the size of the package – from approx. 50 to approx. 200 PLN.

Afanisep 25 WP – the remedy in the form of a powder. Active substance – permethrin. In stables, the product can be mixed with powdered sugar and placed in a place visible to animals but inaccessible to children and animals. Such a mixture can be used both in dry and diluted form. Lured flies ingest a lethal dose of the active ingredient. The price of 1 kg of packaging is about PLN 400.

Cipexen 100 – the active substance of the preparation is cypermethrin. One liter of the agent is sufficient to cover 2000 m . to squirt2and at fogging – up to 10,000,000 m2† For indoor and outdoor use. Price of 1 liter of the preparation – approx. PLN 170.

Aspermet 200 EC – concentrate for spraying. The active substance of the preparation is permethrin. No less than 20% of the active ingredient concentration makes a bottle with a volume of 250 ml sufficient for 500 m . to protect2† The preparation is available in packs of different sizes. Price – from 49 (250 ml) to approx. 950 PLN (5 l).

Fendona Pro – the agent contains the active ingredient alpha-cypermethrin, which is characterized by a fast action. Already 30 minutes after application it neutralizes insects and kills them within 24 hours. What is worth emphasizing, as the manufacturer assures, the preparation is not very toxic to humans and animals. The price of a 500 ml pack is about PLN 250.

dr inż. Przemyslaw Kardasz

Field experimental station of the IOR-PIB in Winna Góra

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