Last updated: 16/10/2022

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Welcome to our big insect killer test 2023. Here we present all the insect killers we have tested in detail. We have compiled detailed background information and added a summary of customer reviews on the web.

We would like to make your purchase decision easier and help you find the best insect killer for you.

You will also find answers to frequently asked questions in our guide. If available, we also offer interesting test videos. Furthermore, you will also find some important information on this page that you should definitely pay attention to if you want to buy an insect killer.


  • A good insect killer is useful, especially in summer! With an electric insect killer you can improve your quality of life, as insects can harm you, especially in the garden.
  • Basically, there are different types of insect killers. Electric insect killers are suitable for rooms and are particularly effective. An insect spray is especially useful if you have specific areas with a lot of insects.
  • It is important that you think about the area of application. The application area of your insect killer can help you decide which insect killer you ultimately want to purchase.

The Best Insect Killer: Our Picks

Guide: Questions you should ask yourself before buying an insect killer

Who are insect killers suitable for?

That depends on how much annoying insects bother you. No doubt you have stayed awake several times during the summer because the buzzing of mosquitoes has kept you awake.

Did you know that there are about 3-4 million different species of insects worldwide?

So far, scientists have only identified one to two million species, but about 10,000 more are added every year. At this rate, it will take scientists several hundred years to identify all the insects.

An insect killer is suitable for everyone. All you have to do now is decide what kind of insect killer you want. Effective insect protection can take many forms. In the following, we will show you your alternatives.

How does an insect killer work?

There are different types of insect killers, which all work differently.

Electric insect killers

The electric insect killer consists of a UV lamp to attract flies and mosquitoes.

The UV light mimics the sunlight found in nature.

This makes insects feel attracted and fly into the light source. In this way, the pests come into contact with the grid, which is electrified. The insects die from the electric shock. Another model is the electric insect killer with fan. Here, the flies, mosquitoes and other pests are drawn into the housing by the fan.

Insect killer with spray

This method can be described as particularly insect-friendly. The pests are not killed directly, but rather kept away from you.

Fliegenfänger mit Fliegen

You can choose between classic insect killers and more modern methods. (Image source: / 108454186)

A scent barrier keeps the pests away from the effective area. So you only have to spray the area from which you want to keep the insects away and the pests will ideally not come near you.

Pest control via a spray is a chemical agent that is not necessarily environmentally friendly. You should also be careful to avoid skin contact when using this type of insect control.

Where can I place the insect killer?

You should consider these 3 criteria before setting up the insect trap:

  1. Range of application of the insect killer
  2. Type of model
  3. Insect killer type

Effective range of the insect killer

Firstly, it is important that you know the effective range of your insect killer. There are insect repellents that only affect the immediate vicinity of your remedy against fly infestation.

Then again, there is the fly trap with a larger area of effect. You should therefore think carefully about how far the insect killer will reach and then set it up accordingly.

Electric insect killers with UV lamps must not be used outdoors!

Type of pest control

You must also consider the type of pest control. Depending on the insect trap, the device makes a loud noise (bang) when insects have been caught. You may find this annoying if you are sensitive to noise. Especially at night, when you have installed the insect screen in your bedroom.

Insect repellent type

As explained earlier, there are different types of insect killers. Some, like the spray, only repel mosquitoes or insects. Others are more active, trapping flies and then killing them.

Depending on which insect killer you have, you should consider where you place this fly trap. You probably don’t want to use a chemical like the spray near your food or bedroom.

The type of insect killer can determine the location of your insect screen. Depending on the type, you can place your fly killer indoors or outdoors (garden).

How much does an insect killer cost?

You can buy a simple insect killer – such as a spray against insects – for less than 10 euros, for example at DM or Amazon. An electric insect killer, on the other hand, which you can also buy in specialist shops (DIY stores) or online, is somewhat more expensive.

The lowest price limit for electric insect killers is about 7 euros. However, if you value a long-lasting and high-quality model, you should spend a little more. An electric insect killer with fan and UV lamp costs at least 25 euros.

Type Price
Spray as insect killer from approx. 3€
electric insect killer from approx. 7€
good electric insect killer from approx. 25€

What alternatives are there to insect killers?

Home remedies are an alternative to electric or chemical insect killers. In the following, we would like to introduce you to some of these home remedies, but you should note that not all of them work well.

  • Washing-up liquid and vinegar: For this home remedy, you need to mix equal amounts of vinegar and washing-up liquid. For this to work, the container must be deep enough and the remedy must be renewed regularly.
  • Adhesive foils with flavour: You can make these adhesive foils yourself, for which you need a strip of paper (you can choose the length and width). Smear this piece of paper with honey so that the strip is completely covered. Then hang up the paper strip as a loop.
  • Catch flies alive: You need a large jar and fill it with some leftover fruit. Then you have to pull a cloth over the opening, but don’t stretch it too tightly so that the insects can still crawl in. Once the jar is full, you can take the trap out and release the insects.

Decision: What types of insect killers are there and which one is right for you?

There are different types of insect killers, each of which works in a different way. Basically, all pest control products work the same way, either catching or driving away mosquitoes.

There are insect killers that work without chemicals and those that are based on the effect of a UV lamp. We would like to introduce the following insect killers to you in more detail:

  • electric insect killers with fan
  • electric insect killers with tension grid
  • Insect killers by spray

The different models have different features and are suitable for specific applications. In the following, we will show you these in more detail so that you can make the right decision for you.

What distinguishes an electric insect killer with fan and what are its advantages and disadvantages?

An electric insect killer works under high voltage, and there are differences in the wattage. Generally, however, it is sufficient to buy a fly killer with 5 watts.

The common feature of all electric insect killers is the UV light. Ultraviolet light is produced in the light tubes and attracts mosquitoes, wasps, moths and other insects.

  • no chemical use
  • handling and cleaning are easy
  • large effective range
  • can be placed flexibly
  • long service life
  • only suitable for indoor use
  • dead insects must be removed
  • insect killer works best in the dark
  • can be noisy in operation

The insects fly into the insect killer with fan and the airflow then pulls the insects into the fly trap. The insects die by drying out. Afterwards you only have to remove the dead insects from the trap.

What distinguishes a spray insect killer and what are its advantages and disadvantages?

An insect killer that works by means of a spray works by means of scents. This spray can then be sprayed on a specific spot and works within a very short time.

  • specific application
  • also works outdoors
  • harmless in the household
  • chemical agents
  • spray film remains
  • removal of dead insects

A spray for pest control works on a chemical basis. After application, however, a spray film may remain, which you have to remove afterwards.

What are the characteristics of an insect killer with a voltage grid and what are its advantages and disadvantages?

This electric insect killer also works via UV lamps that mimic sunlight. This is to attract the pests and eventually kill them.

  • Protective grid
  • catch tray for the dead insects
  • easy to clean
  • can be noisy
  • works best in the dark

The difference to the electric insect killer with fan is small. The insects are lured into the high-voltage grid and die from the strong voltage. Don’t worry, there is a protective grid for safety, so nothing can happen to you!

Buying criteria: You can use these factors to compare and evaluate insect killers

In the following, we would like to show you which criteria you can use to compare and evaluate insect killers. This will make it easier for you to decide whether a particular product is suitable for you or not. In summary, these are the following criteria:

  • Wattage/electricity
  • Range of the insect killer
  • Installation site
  • Area of application
  • Size/Weight

In the following paragraphs you can find out what the individual purchase criteria are and how you can classify them.


Especially with electric insect killers, it is important to think about the power beforehand. This refers to the wattage, the power of the UV lamp. Depending on the insect killer, these devices have between 4 and 15 watts per lamp. You should take into account that some fly traps are equipped with LED lamps and others with fluorescent tubes.

This alone makes the difference in luminosity, service life and electricity costs!

Range of the insect killer

Depending on what type of insect killer you want, they have different ranges. For electric insect killers, you need to look at the power. If the insect killer is low wattage, the range will probably be less. However, you should consider where you want to place your insect killer when looking at the range!


This criterion applies to electric insect killers. The insect killer should best be hung up, which achieves the best possible effect. The fly trap must of course hang in the place where you have the biggest problems with insects.

With electric insect killers, you must bear in mind that they must not be used in the garden or on the balcony. You must not hang the electric insect trap near windows or air conditioners. The wind will negatively affect the performance of the fly killer.

Area of application

The electric insect killer can only be used indoors. This type of pest control is not permitted for the garden. However, there are electric insect killers that you can use in the garden, on the terrace or balcony if insects bother you too much.

We recommend natural insect killers for the garden, which we have introduced to you in the alternatives. You can also use sprays or the old-fashioned fly swatter.

An insect repellent spray works a little differently. You can apply it specifically to the areas that cause you problems. The advantage is that you can also use it outdoors.


Basically, an insect killer should be compact so that you can always reposition it. The ultraviolet light can also be very decorative and can be used as a night light.

Type Size Weight
electric insect killer with fan from approx. 8x10x20cm from approx. 500 grams
electric insect killer with grid from approx. 24x11cm from approx. 400 grams
insect killer with spray from approx. 20cm from approx. 400ml

Facts worth knowing about insect killers

How do I clean the insect killer?

Most electric insect killers have a collecting tray at the bottom where the dead insects are kept. You can simply remove this plastic tray and then rinse it with water.

However, especially electric insect killers with tension grids often have insects stuck to the grids. Then the insects do not fall into the catch tray, so you have to clean the grid differently.

Fliegen in Glasfalle

You can also make your own fly catcher from glass. (Picture source: /108195380)

Many devices come with a cleaning brush for this purpose. If you have an electric insect killer without a brush, you can easily order one online. With this brush you can easily clean the grids and other gaps.

Before cleaning, however, you must always make sure that you disconnect the device from the power supply, otherwise you can quickly injure yourself!

What natural insect killers are there?

We have already shown you some alternatives to insect killers. However, there are more natural insect traps. The home remedies already listed are good, but there are more from nature.

  • So spiders are considered natural insect killers! You can and probably only want to enjoy this advantage in the garden, but their benefit is proven. However, you must be careful that they do not multiply too much!
  • Another natural insect killer are various plants, but not all of them are effective. The Venus flytrap in particular is considered a natural flytrap. The plant is a carnivorous plant and attracts its victims through its trap leaves.
  • Note that it needs light and prefers warmth, so it is well suited for the garden. However, if there are cold spells in the summer, you will have to put the plant somewhere else!

Picture source: / 21010835