Forget the traps. You need poison. They will run your truck, way through type wiring etc. Do not skimp. Put those poison blocks all around.
I cant imagine cayenne pepper staying put very long. Bait traps with poisen at all times, maybe bait traps attached with velco in a couple of spots in the engine compartment? Poison those suckers!I now carry and use cayenne pepper that I sprinkle all over my engine on a regular basis. After the damage they did to my wiring and ultimately catalytic converter. My insurance paid out good money to have it repaired. The dealer shielded the wiring on top of the engine but said the best preventative was cayenne pepper. They told me they have seen the same Hondas in their shop more than once for rodent issues.