Same problem with my car.
Aged car, however, this problem only occurred since pass few months.
And only black ant.
I didn't eat inside my car.
Take away from restaurant also just put then take off.
The problem is I couldn't find the source.
Search high and low already just left didn't take off those carpet that cover the metal part.
Even used H2O Insecticide and sprayed whole car before and put under hot sun.
After a while, the ants come back.
HELP NEEDED (Seriously) too.

Now got put a little poison, but they are still outside and inside the car.

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added,

Last time spray insecticide because found out ants had made a nest in the safety belt clip.
Other than that, can't find other place although tried few times.

This post has been edited by Fantasytan: May 4 2009, 11:16 PM

Luckily my car don't have cockroaches..
Haha.. Maybe got I also don't know but never seen one before..

Use spider, later whole car owned by spiders how?

One of my friends told me yesterday that ants are afraid of rubber band and a type of grass. (He forgotten what is the name of the grass already)
The grass does not has any smell.

Can someone clarify about that and name the grass?

The Bunga Cenkih will evade the ants for sure?
Pandan leaf can help ma?
I thought Pandan leaf is sweet one?
I hope to evade the ants without adding any odour to my car. LoL.