Siamese

　　There have been no reported problems so far with cats eating cockroaches. However, we cannot ignore this issue since cockroaches carry many bacteria that may infect the cat’s body after ingestion; they might also be expelled with the feces, which, if exposed at home or touched inadvertently by humans, could become a source of disease. Therefore, it is best not to let cats eat cockroaches.

　　Before your cat puts a cockroach into its mouth, you must stop it in time. Then quickly pinch the cockroach with toilet paper and throw it into the toilet. At this time, punish the cat promptly, for example by tapping its nose tip or lightly patting its head, and make sure to express reproach in your tone. This way, the cat will understand that eating cockroaches is wrong.

　　If it is too late, make sure to clean the dense feces promptly and avoid getting it on your hands. If you happen to get your hands dirty, be sure to disinfect them immediately with medicated soap. (Source：PetsZone)