Does Windex Kill Spiders: Is It Really Effective?

There are millions of people around the world who are afraid of spiders because of arachnophobia, or the fear of spiders. Many people resort to using household cleaning products like Windex when they encounter these eight-legged creatures in their homes. But does Windex really kill spiders?

The purpose of this article is to separate fact from fiction regarding the effectiveness of using Windex as a spider control method. Therefore, if you want to know whether Windex is a viable solution for dealing with spiders, continue reading!

Does Windex Kill Spiders?

Windex, a popular glass cleaner, is not specifically designed or marketed to kill spiders. While it may be effective in killing some spiders on contact due to its ingredients, it is not a reliable or recommended method of spider control. It is always best to use pest control methods specifically designed for spiders to ensure effective and safe elimination.

How to Use Windex to Kill a Spider?

  1. Wear goggles and a nose mask to protect your eyes and respiratory system. Ammonia, which is a main ingredient in Windex, can potentially cause headaches, breathing difficulties, and eye irritation.
  2. Make sure all windows and doors are locked before using Windex. This is to prevent spiders from escaping treated areas.
  3. Be sure to shake the Windex bottle well before use, according to the manufacturer’s instructions, to ensure that the product is properly mixed.
  4. Take aim and spray a generous amount of  Windex directly on the spider to immobilize it. Leave the live spider undisturbed for 15 to 20 minutes to allow the Windex to work.
  5. After the recommended contact time has passed, use a cloth or paper towel to pick a spider and throw it in a dustbin bag. 
  6. Dispose of the cloth or paper towel in a sealed plastic bag or trash bag.
  7. Wash your hands thoroughly with soap and water after handling spiders or using any cleaning product, including Windex.
Using Windex to Get Rid of Spiders
Glass Cleaner: Windex

FAQ related to Windex & Spiders

Is Windex an Effective Spider Repellent?

Although Windex may temporarily deter spiders due to its strong smell and its chemical properties that suffocate spiders, it is not proven to be an effective spider repellent in the long run.

Is it Safe to Use Windex Around Pets and Children?

Ingestion or contact with Windex or any cleaning product can be harmful to pets and children. It is important that Windex or any cleaning product be used according to the manufacturer’s instructions and kept out of reach of children and pets.

Does Windex Kill Spider Eggs?

In addition to its degreasing properties, Windex can also be used to eliminate spider eggs. The water in Windex can suffocate the spiders and their eggs, while also dismantling their webs. This can force the spiders to abandon their webs and seek alternative nesting spots.

Does Windex Kill Spiders Instantly?

In general, Windex takes 1 to 15 minutes to kill or immobilize a spider, depending on several factors, such as the spider’s size, the amount of Windex applied, and the location of the application.

Will Windex Kill All Types of Spiders, Including Poisonous Ones?

There is some evidence that Windex can kill some spiders, but not sure if it kills poisonous ones, and it’s not recommended to be used against venomous spiders or poisonous spiders. It is best to consult a professional pest control service for the safe and effective removal of spiders like black widows or brown recluse spiders since they pose serious health risks.

does windex kill spider eggs


In conclusion, while Windex may have some properties that can be harmful to spiders, it is not a recommended or reliable method for spider control. 

Windex is primarily designed as a cleaning product and not intended for use as a spider repellent or insecticide. 

Additionally, using Windex or any other household product to kill spiders may pose risks to human health, especially if not used properly or in accordance with safety guidelines.

Photo of author


Daniel White
I'm Daniel White, and I live in Jacksonville, Florida. The warm and humid climate of Florida gives an ideal habitat for many different kinds of pests. So, if I had to live in Florida, I had to learn how to deal with these pests. Now, I have 7 years of experience in Pest Control.

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