you can try putting some serai, or lemon grass when u are sleeping, i mean in the night.

then in the morning u remove it.

the other thing u have to do is remove all rubbish in your car and then give it a good wash, removing all unrequired papers and rubbish,

lastly try not to park near the longkang, most of the time they some from there and follow u home.

they breed in, then let the young ones out, i also got that problem.. now no more.