Cockroaches are hardy bugs. This fact is recognized
world-wide.
WipeOut can eradicate them over time if they're in your car. But a
better remedy is still prevention:
>> Avoid parking near rubbish dumps
>> don't park next to lorries, vans, and other crummy old
looking vehicles;
german roaches can fly across to your car
>> don't leave the door open too long when parked at the rear
of some HDB flats where the rubbish chute doors are - at night, the
ground around that area is acrawl with small baby roaches
>> clean and spray shieldtox (make sure other brands you use
do not contain petroleum distillate) externally around the
perimeter of your car once every two months
>> clean the interior of your car THOROUGHLY
>> DON'T eat inside car if can be avoided
Here's a known fact to share; roahces CAN BE introduced into your
vehicle by ferrying things like old clothings, pots and pans that
someone has kept a long time but never used, and old books kept in
a carton box. Generally, if you ferry a lot of old things, baby
roaches are potential stow-aways in your boot.
Search the internet about cockroaches, and you will get to see just
how small, a baby roach is.