How to get rid of a wasp nest in a car engine?

This blog post will answer the question, ‘How to get rid of a wasp nest in a car engine?’, and cover topics like why are wasps attracted to a car engine, how to protect a car engine from wasps building nests, and ways to kill wasps nesting in a car engine.

 How to get rid of a wasp nest in a car engine?

These are the following ways to get rid of a wasp nest in a car engine:

  • Locate the nesting site, it might be right on the engine bay or around the battery areas
  • Make sure to wear protective layers of clothing to cover the entire body as the wasps can get violent and start attacking
  • Spray the nest with a wasp repellant 
  • Spray any wasps coming out to attack 
  • Give the wasp nest one final spray to ensure nothing comes out
  • Grab the nest and dispose of it in the local trash dump
  • In case the situation gets any tenser, consult the pest control unit or any related social body for help

Why are wasps attracted to a car engine?

Wasps are usually attracted to the car engine and see it as a perfect spot to build their nests because it is a warm and dark place, perfect for them to call home.

Wasps can also make their way into the car engine if there are food particles or any related litter inside the vehicle. Particularly, food that is sweet and sugary attracts wasps the most.

Wasps, particularly paper wasps can build a nest under the car hood and stay there. They can exit the engine through the radiator grille. However, this mainly takes place if the vehicle is parked in an open area for a long time. 

Wasps can also build their nests in car engines if they feel that is a good source of food for their offspring. Sometimes, there can be small dead insects inside the engine that can act as a good source of food for the smaller wasps.

How to protect a car engine from wasps building nests?

These are some of the ways to protect a car engine from being targeted as a nesting site for wasps.

Parking in an enclosed  area

This is probably one of the most safest and reliable ways to protect a car engine from being targeted as a nesting site for wasps. These insects are less likely to be found in enclosed areas like a garage or a shed as they lack foliage.

In case of winter months, wasps and other related insects can get attracted to the warm and cozy embrace of a recently used car engine. This might draw them into the engine and compel them to call it their next home.

This can be dangerous as the nests are made up of materials like twigs, leaves, or hay. They can interfere with the engine components and might cause fires too. The more offspring inside the nest the more troublesome the situation becomes as they multiply and grow, and can also interfere with other critical components like wires, and cables.


Sometimes, the garage doors however firmly closed, appear to have certain holes or openings on the sides that are enough for wasps to enter and invade the car.

Therefore, it is essential to properly weatherstrip the garage doors and other windows if any, to prevent any entry points from existing.

Insulating garage walls and boundaries

Sometimes, the garage walls and boundaries may have small holes or any openings that might have been created over time. It is important to get these covered as soon as possible or face not only a wasp invasion but other insects and smaller animals as well.

Consulting a local pest control service can help as they know how to insulate the walls and boundaries that possess such vulnerabilities with materials like copper mesh. This will totally shut the garage off and prevent any wasp invasions inside the car engine.


Wasp traps are very commonly used to deter wasps from getting anywhere near the vehicle. They can be hung up in and around the vehicle.

They contain a liquid that is used to attract wasps and trap them once they enter it. The liquid needs regular replacement and the container needs to be changed as well or it can accumulate dead wasps.

Making use of pesticides

In case none of the above DIY methods work, pest control is always a reliable solution. They make use of pesticides or insecticides to ward off any wasps and related insects from the car.

They spray these pesticides in and around the vehicle and can be carried out annually or twice a year depending on the chosen service plan. The chemicals can also dissipate due to bad weather so it needs to be kept in check whenever it rains or snows.

Ways to kill wasps nesting in a car engine

These are the following ways to kill wasps in a car engine or any other area:

  • Wear protective equipment that covers the entire body in case the wasps get violent and start attacking
  • Choose after dusk as the time to perform this activity as wasps are least active and violent in the dark
  • After locating the nesting site, a wasp killer can be used to spray the nest from about 20 feet away from the vehicle
  • If the wasps try to attack, it is advisable to spray on them
  • If there are no more wasps left in and outside the vehicle, it is recommended to spray on the nest another time
  • Finally, by wearing protective gloves, the nest can be removed and disposed of at the local trash dump

Research has shown the different types of wasps that can invade the vehicle and how to ward them off.


This blog post addressed the question, ‘How to get rid of a wasp nest in a car engine?’

We understood the various reasons why wasps are attracted to a car engine and how to get rid of their nests. Furthermore, the different ways to kill wasps nesting in a car engine have also been discussed. Please feel free to comment on the content or ask any questions in the comments section below.

Frequently Asked Questions (FAQs): How to get rid of a wasp nest in a car engine?

Why do wasps hover around cars?

Wasps usually hover around cars and the radiator grilles as they feel the heat radiating out of it a threat to their kind and their nests. They thus feel the urge to somehow sting it as they feel it is a predator.

Should you destroy a wasps nest?

A wasp nest should only be considered for removal and destruction when they are interfering with daily human life and causing difficulties.

Will a wasp nest go away on its own?

A wasp nest if left for a long time will eventually die but, it will produce new queens by then. These queens can build nests of their own in the future.