If you are parked stationary for a period of time you might purchase some Diatomaceous Earth. It consists of fossilized remains of diatoms, a type of hard-shelled protist. It is sold in bags as a fine powder and can be used as a mechanical insecticide. It is non poisonous and non toxic. It can be found in garden centers, nurseries, pet stores and many other locations. It has a wide variety of uses.
Sprinkle it around your tires an stabilizers and anything else touching the ground. When ants crawl through it, for them it is like swimming through razor blades. It is very Abrasive to them cutting open there exoskeleton exposing their insides to bacteria, and lots of other nasties. It also allows the fluid from their bodies to leak out. All of which will kill them.