How to Get Rid of Roaches in the Car

by Mary Ylisela
cockroach image by Benjamin Jefferson from

The inside of your car is not the typical place to find a cockroach infestation. Regardless, roaches will go wherever there's a food and water source, including an available source in your car. Having cockroaches in your home is unpleasant, but dealing with them in the close quarters of your car can be unsettling. Natural supplies help rid your car of cockroaches without introducing strong chemicals into the place where you, your family and pets sit as you drive.

Step 1

Remove easy roach food sources by getting rid of crumbs and food bits.

Vacuum the interior of your car completely. Remove crumbs and food particles from carpeted and upholstered areas, making sure to get down in between seats and underneath them as well. Empty out and vacuum your trunk, too.

Step 2

Fill a spray bottle with vinegar. Spray all interior, hard-surfaced areas inside your car, such as the dashboard, center console and the insides of doors and windows. Vinegar cleans the surfaces of food crumbs, spills and stains.

Step 3

Sprinkle boric acid powder on the carpet and fabric upholstery in your car. Boric acid is natural, with low toxicity and slowly kills roaches as they walk through the powder, then clean themselves and ingest it. Replenish the boric acid powder once a week until roaches are gone.

Step 4

Make boric acid roach bait to aid in the killing of cockroaches in your car. Mix together 1/4 cup shortening, 1/8 cup sugar, 1 cup boric acid, 1/2 cup flour and enough water to make soft balls of dough. Stir the ingredients well to distribute the boric acid powder throughout.

Step 5

The cap of a milk jug conveniently holds roach bait in your car.

Form the boric acid bait into walnut-sized balls. Place one ball in each milk jug cap. Place the roach bait in your trunk, glove compartment, ashtrays and inside the center console.

Replenish your roach bait supply every few days until you see no more roaches.


  • Be persistent with roach bait and boric acid powder. These methods are effective but can take several weeks to kill a serious roach infestation.
  • Even though boric acid is natural and low in toxicity, it can harm children or pets if ingested. Vacuum your car and remove roach bait balls if you must transport children or pets in the car.

Items you will need

  • Vacuum cleaner
  • White vinegar
  • Spray bottle
  • Clean cloths
  • Boric acid powder
  • Bowl
  • 1/4 cup shortening
  • 1/8 cup sugar
  • 1 cup boric acid
  • 1/2 cup flour
  • Spoon
  • Milk jug caps

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