i tell u, first you send your car for a full cleaning session. GET THE FELLOWS TO VACUUM KAU KAU YOUR CAR INSIDE OUT TO SUCK OUT ANY POSSIBLE ROACH EGGS.

THEN, taroh those cockroach bait, they crawl into the bait disc, then they eat the poison liao, then they go back to the nest and die. then their family members feed on the dead roach, then HAM GA FU GUAI. guaranteed!

put about six to eight discs all over the car; under dashboard, under seats, under carpet, spare tire compartment, everywhere la.