Many years ago I put pandan leaves in the car and boot. And only a few years ago that I came to know that's a bad move because friends said that although fresh pandan leaves deter cockroaches but once they dried up they attract cockroaches as they become food for the cockroaches.
Then I used those cockroach poison food baits but after some time I stopped because I didn't know whether the cockroaches went to die inside my car.
And then I used those cockroach sticky trap boxes in which when cockroaches went in for the bait in the centre of the box they got kena glued and immobilised and so left to die.
But is there something that can deter or disuade cockroaches from entering car in the first place?
Something with such power such that cockroaches will always avode the car?