Does Windex Kill Flies? (Yes, It Actually Does)

Windex has carved a niche for itself as the go-to glass cleaner, but have you ever wondered if its cleaning prowess extends to pest control?

With summer around the corner, flies cease to be a rare annoyance. So, does Windex kill flies?

In this article, we explore whether Windex is an effective weapon against these common household pests and discuss its potential impact on flies, their life cycle, and the environment.

Does Windex kill flies

Let’s dive in to unveil the truth about Windex and its role in keeping flies at bay.

Does Windex kill flies?

Yes, Windex can kill flies. Although not designed as a pest control product, it contains solvents and detergents that, when directly sprayed onto flies, can have a lethal effect.

The fast-drying formula of Windex may cause dehydration and suffocation in flies by covering their breathing tubes.

Furthermore, the ammonia component in many Windex formulas could also be toxic to them. It’s important to remember, however, that Windex is primarily a cleaning product.

For larger infestations or more efficient control, professional pest removal products or services are recommended.

Also, keep in mind that while Windex can kill individual flies, it won’t necessarily affect the lifecycle or reproduction of the pest population. Thus, it’s essential to maintain proper sanitation alongside using such methods to effectively control flies.

How fast does Windex kill flies? 

Upon spraying Windex, flies generally get immobilized within about 10-15 seconds. This is because the product’s active ingredient, ammonium hydroxide, disrupts the flies’ cell functions and nervous system, leading to paralysis.

Complete cessation of bodily functions usually occurs within approximately 30 seconds. In most cases, the flies will die within a minute of direct contact with Windex.

Does Windex kill fruit flies?

Yes, Windex can kill fruit flies. The ammonia present in Windex disrupts the waxy coating on the exoskeletons of fruit flies, leading to their dehydration and eventual death.

Does Windex kill fruit flies

To use Windex against fruit flies, directly spraying it onto the flies or the areas they frequent, such as around fruit bowls or in drains, could work effectively. Be aware that the efficiency of this method depends on regular contact and exposure.

What kills flies instantly?

Killing flies instantly can be accomplished through a variety of methods, ranging from commercial insecticides to homemade traps. Below are some of the most effective means of dealing with flies:

  1. Commercial Insecticides: Products like Raid, made to kill flies and other insects, are very effective. They contain chemicals that swiftly neutralize flies upon contact.
  2. Fly Swatters: This manual method requires some precision but can kill flies instantly upon a successful swat.
  3. Electronic Bug Zappers: These devices use light to attract flies and other insects, then zap them with an electric current.
  4. Flypaper: These sticky strips attract flies and trap them – death isn’t instant, but it’s certain.
  5. Pyrethrin Spray: Made from chrysanthemum flowers, this natural insecticide quickly kills flies and is biodegradable.
  6. Homemade Traps: A common one is the apple cider vinegar trap. Fill a cup with apple cider vinegar and cover it with plastic wrap, poking some holes in it. The scent attracts flies, and they get trapped inside.

Remember, killing flies instantly does not prevent further infestation. For best results, use these methods in combination with keeping your home clean, covering food items, and sealing garbage properly to deter flies.

What Household Item Kills Flies?

There are several household items that can be used to kill or repel flies effectively. Some of these items are:

What Household Item Kills Flies
  1. Apple cider vinegar: This versatile ingredient can be used as a bait in homemade fly traps to attract and kill flies.
  2. Dish soap: A bit of dish soap, when added to water or apple cider vinegar, causes flies to drown upon contact.
  3. Essential oils: Certain essential oils, such as eucalyptus, lavender, and lemongrass, can be used to repel flies.
  4. Baking soda and sugar mixture: A combination of these two can make an effective bait for flies, as the sugar attracts them, and the baking soda reacts with their digestive system, causing them to die.
  5. Lemon and cloves: The strong, fresh scent of lemon combined with the pungent aroma of cloves creates a natural fly repellent.
  6. Cayenne pepper: Sprinkling cayenne pepper around infested areas can deter flies due to its pungent smell and the irritation it causes on their sensory receptors.

Keep in mind that while using household items can help in killing or repelling individual flies, it is essential to maintain cleanliness and proper sanitation for effective long-term control.

What is the Best Homemade Fly Spray?

A highly effective homemade fly spray consists of a combination of essential oils and some dish soap. Follow the steps below to make the spray:

What is the Best Homemade Fly Spray


  • 1 cup water
  • 1/2 cup apple cider vinegar or white vinegar
  • 10-15 drops of eucalyptus, lavender, or lemongrass essential oil
  • 1 teaspoon of dish soap


  1. In a spray bottle, combine the water and apple cider vinegar or white vinegar.
  2. Add the essential oil(s) of your choice to the mixture. The oil(s) should have strong repellent properties against flies.
  3. Pour in the dish soap and mix gently. The dish soap helps break the surface tension, ensuring flies are unable to escape once they come into contact with the spray.
  4. Once the mixture is ready, you can spray it onto surfaces, around entry points, and in areas frequented by flies. Directly spraying onto flies will also be effective due to the mixture’s potent ingredients.

Remember to always test the spray on a small surface before using it extensively, as the essential oils or vinegar may cause damage or discoloration on certain materials.


While Windex isn’t designed to be an insecticide, it can indeed play a role in killing flies. Its potent ingredients, like ammonium hydroxide, can disrupt flies’ cell functions, leading to quick immobilization and death.

However, its use in pest control should be a secondary measure, with a primary focus on proper sanitation and professional pest removal methods for effective, long-term control.

Moreover, remember that Windex’s role is more about controlling individual files rather than managing broader infestations. So, Windex can help on a small scale, but for large infestations, more specialized treatments may be necessary.

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