Fight blowflies – nest and other causes

Blow flies - fight nest and other causes. Insect: The blue blowfly or flesh fly (Calliphora vicina) is clearly identifiable by its shimmering body. (Source: Getty Images/manfredxy)

Blowflies are pests that are very annoying, especially during the warmer months of the year. They can transmit diseases and affect hygiene. If you notice a nest, you should remove it as soon as possible.

Overview

Blowflies crawling over your bare skin in summer are not only annoying, but also unhygienic. Therefore, the question: how to get rid of the pests?

Blowflies can transmit diseases

The blue blowfly or flesh fly (Calliphora vicina) and its counterpart the gold fly (Lucilia sericata) actually look attractive with their shiny bodies. But hygienic they are not.

These pests can occur in the household.

Cockroaches can be carriers of anthrax, tuberculosis and salmonella. (Source: imago images)

The larvae of the clothes moth eat holes in clothing. (Source: imago images)

Bread beetles destroy food and objects. (Source: imago images)

Mice are omnivores. (Source: imago images)

Photo series with 8 pictures

Because flies are attracted by anything that smells unpleasant. For this reason they can transmit diseases. The insects are very fond of laying their eggs in the dung or garbage. The residues remain on their bodies and are dragged into the house. Regardless of which species has taken up residence in your home, pests multiply at a furious rate.

If the flies have found a nest in your house or apartment from which the larvae hatch, it can quickly become a fly plague. You should prevent this by taking care that the insects do not come into your home in the first place. Even a few animals can quickly become a nuisance. Therefore, the Institute of pest science advises to quickly control them. Because the animals transmit diseases – especially so-called human pathogenic germs such as salmonella can be passed on.

Preventing flies in your apartment and house

Blow fly: The insects can become real pests. (Source: Getty Images/KrasStock)

Blowfly: these insects can become real pests. (Source: KrasStock/Getty Images)

A fly can only lay its larvae in your house or apartment if it enters in some way. Once you have flies in the house, you often can’t get rid of them so quickly. Make sure that the blowflies stay outside the door.

Fly screens for all window models

Fly screen for windows: self-adhesive Velcro 1 (Source: Tesa)

Fly screen for windows: self-adhesive velcro tape 2 (source: Tesa)

Fly screen for windows: self-adhesive Velcro tape 3 (source: Tesa)

Fly screen for windows: roller blind for skylights (source: Neher Insektenschutz)

Fly screen for windows: skylight with stretchable tulle fly screen (Source: Tesa)

Photo series with 9 pictures

Prevent intrusion into the house

Especially in the evening hours there is a danger that the flies come into the house, because they are strongly attracted to the light. Therefore, close the windows before you turn on the light or turn off the light before you ventilate. If you do not want to sleep with the window closed during the summer months, you should install appropriate insect screens on the window. Also, every time you open the door, make sure that the pests can not follow you.

Recognize and assign hornet and wasp nests

Wasp nest: Not all creatures are a nuisance (Source: Thinkstock by Getty-Images)

Recognize German wasp (source: imago images/blickwinkel)

Recognize common wasp (source: imago images/alimdi)

Wasp nest of the common wasp (Source: imago images/Arco Images)

Recognize Saxon wasp (Source: imago images/blickwinkel)

Wasp nest of the Saxon wasp (Source: imago images/blickwinkel)

Recognize middle wasp (Source: imago images/blickwinkel)

Photo series with 11 pictures

Install fly screens to prevent a plague of flies indoors. The grids also keep away wasps and other insects. You can get fly screens for straight windows as well as for windows that are integrated into the slope of the roof. You can buy products optimized for commercial windows, or buy yardage and customize it to fit your windows. For patio doors you can also get suitable fly screens , which can be opened and closed from the outside. In this way, effective protection is possible throughout the house.

Proper handling of food and leftovers

Make sure you place garbage cans or compost piles as far away from the house as possible. In the warm season, the smells strongly attract the flies. A garbage can located directly in front of the house entrance or in front of the kitchen window can be a reason for a larger number of flies to enter the house or apartment. You will often not get rid of them so quickly again.

In the kitchen, do not leave fruits and vegetables open or consume them quickly. Juices should also be sealed, as the flies like to settle on the food. This is unhygienic.

Fly swatter and other means against flies

Gold fly (Lucilia sericata) (Source: Getty Images/DE1967)

Insect: The body of the gold fly (Lucilia sericata) is green-gold in color. (Source: DE1967/Getty Images)

If you already have flies in the house, there are several ways to control them.

For example, it is recommended to use Fly swatter . It’s inexpensive, but its use often leaves marks – especially when the insects crawl along the wallpaper. Cleaner are electric, battery-powered fly swatters . A light electric current flows in them, which is harmless to humans, but kills the fly immediately without having to kill it.

Chemical pesticides are effective, but only recommended to a limited extent, especially if you have small children in the house. Fly spray effectively deters flies and kills the insects quickly, but it puts a strain on the respiratory system.

Adhesive fly traps also help. They are easy to use and do not emit odors. Since the sight is not very nice, especially in living rooms, they should be replaced once a day.

Our tip
If you have an excessive number of flies in the house, you should look for the nest and remove it.

Try to remove the nest

Offspring: Gray flesh fly (Sarcophaga carnaria) laying eggs in a carrion flower (Stapelia hirsuta). The flowers smell like rotten meat to attract pollinators. (Source: imago images/imagebroker)

Descendants: Gray flesh fly (Sarcophaga carnaria) laying eggs in a carrion flower (Stapelia hirsuta). The flowers smell like rotten meat to attract pollinators. (Source: imagebroker/imago images)

The flies do not build a nest. For laying their larvae they look for a protected room, which is dark and quite well tempered. Since blowflies also like strong odors, they like to collect – also for laying eggs – in the feces of animals, such as feces, manure or even in food scraps.

If you notice an excessive infestation of flies in your home, check if there is any open food somewhere that has been forgotten about. There can also be accumulations of fly larvae in cavities, for example in the cellar, behind blinds or high furniture. You can spray the cavities with fly spray. However, this chemical leaves odors and kills other insects as well.

Since blowflies are not very picky when it comes to depositing their larvae, it is very difficult to spot the nest or deposition site. Be sure to remove food scraps immediately and empty trash cans daily. Organic waste should be disposed of immediately and not put in the trash can at all. Especially in summer it is important to avoid the occurrence of odors. Odors attract blowflies and virtually invite them to lay their larvae.

Where does the name blowfly come from?

The blowfly got its name from its preference for droppings. The word "schmeiben means "dropping feces. And the insect likes to lay its eggs on manure, feces and dung, among other things.

But despite its bad reputation, the blowfly can also be useful. This is how their larvae are bred in sterile laboratories and used, for example, in wound healing. The offspring of Lucilia sericata, or the golden fly, are used for this purpose in particular.

How long do blowflies live?

It takes about four weeks from the time the eggs are laid until they become blowflies. How long the finished and fully equipped insects then live depends, among other things, on their environment. In good conditions – i.e. sufficient food, few enemies – they can live up to two months.

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