There are a number of ways that you can kill bed bugs in your vehicle in the winter months. These methodologies include but may not be limited to:
> Steam application which kills on contact.
> Vacuuming to physically remove bed bugs.
> Heat treatment.
> Residual insecticide treatment.
> Application of suitably labeled pest strips which are labeled for bed bugs.
No matter which methodoogy(ies) you choose, it is necessary to be suitably thorough and careeful.
Let me know if any additional questions or concerns, good luck ! PJB