Cockroaches have super reproductive ability. As far as I know, there is no specific medicine that can kill them. I can only say that cockroaches can't step on it. The more you step on them, their oocysts will shoot out like anti-aircraft guns. They will reappear when the temperature is right. Cockroaches can only be burned. Cockroaches that can swim in boiling water are not afraid of scalding. I have seen cockroaches killed by splashing water, but none of them are dead. After a while, they will crawl away. I've also seen cockroaches crawling in disinfection cabinets at hundreds of degrees. I think it can only be cleaned regularly, where there are many cockroaches, wash them with water, and all the egg sacs are washed clean. When cockroaches are found, they are put in containers and then burned. Catch it with a cockroach trap. If you catch it, you must burn it. There is no other way but to kill slowly. Again, cockroaches don't seem afraid of electricity. I have seen cockroaches crawling happily in sockets.