What kills Joro spiders [Exterminator Explains]

Sam McGilin

Sam McGilin

Hey there, I’m Sam McGilin, the person behind Pallentor. I have worked in the pest control industry for over 15 years. On this site, I share my knowledge so you can enjoy a pest-free home.

Important Disclosure: This post could contain affiliate links. This means that if you make a purchase through any of the links, we may receive a commission at no additional cost to you.

As a seasoned pest control specialist, I know that dealing with Joro spiders can be intimidating.

This article provides a comprehensive look into these fascinating yet often bothersome creatures, their behaviors, habitats, and the role they play in our ecosystems.

By the end of this read, you’ll understand not just what kills Joro spiders, but how to effectively control their presence in your environment. It’s all about co-existing harmoniously with nature, while maintaining the comfort and safety of your own home.

What kills Joro spiders

Joro spiders, as resilient as they may seem, have their vulnerabilities. In this section, we delve into the elements and creatures that threaten their existence and how they can be harnessed to keep your environment joro-free.

Natural predators: Birds, insects, and other animals that eat Joro spiders

There are numerous natural predators of Joro spiders, including certain species of birds and insects. Birds such as the blue jay and certain wasps like the spider wasp are known for their spider-hunting prowess. Also, praying mantises, some ants, and even larger spiders prey on joros.

Human intervention: Traditional methods of killing spiders

Beyond nature’s solutions, humans have also developed ways to combat these spiders. From basic methods like squashing (although it’s messy and not highly recommended) to more tactical approaches like using vacuum cleaners for removal. Don’t forget trapping them and releasing far from your home, which is a humane method that respects all forms of life.

Pesticides and chemicals: Which ones are effective against joro spiders

There’s also the option of chemicals and pesticides, which have proven to be quite effective. Products containing pyrethroids, like deltamethrin and bifenthrin, are usually effective against spiders. However, use these chemicals cautiously, as they may have harmful effects if not handled properly.

Natural repellents and substances: Herbs, oils, and other natural substances that can kill or deter Joro spiders

For those preferring a greener approach, there are natural substances that deter Joro spiders. Essential oils, for instance, like peppermint, tea tree, and eucalyptus, have been found to repel spiders effectively. Moreover, certain herbs like lavender and mint can deter these creatures when planted around the house.

Environmental factors: Weather, climate change, and how these can affect Joro spider populations

Lastly, environmental factors like weather and climate can impact Joro spiders’ survival. Cold weather can kill these spiders, as they thrive in warm, humid conditions. Climate change could potentially alter Joro spiders’ distribution, either reducing or increasing their numbers.

In the next section, we will wrap up by offering practical tips and advice on controlling joro spiders effectively in your home or garden.


Understanding what kills Joro spiders empowers us to deal with them effectively. Leveraging both nature’s arsenal and human interventions can help manage these creatures in our spaces.

Remember, pesticides should be a last resort, and humane methods are always preferable. We should aim for a balanced ecosystem where every organism, including Joro spiders, has its rightful place.