As long as a piece of garlic, how to easily kill cockroaches at home?

I am particularly interested in the dissemination of correct methods, especially the only correct method. Because everyone's research field is different, it takes a lot of time for a person to get the result, and only he knows it. It is really unnecessary for countless people to spend a lot of time and money stepping on the same pit. So the only correct way to write a few articles I only know may not be the only one, but as far as I know, it is the only one. Writing this makes me feel more fulfilled and motivated.

Killing cockroaches is typical. There are many methods, but the only one is absolutely effective. No matter how you use failure to convince yourself that it is valuable, the failure to kill cockroaches still has no aesthetic feeling and will make you completely helpless again and again. The law of cockroaches says that when you see a cockroach, it means that there must be 100 in the invisible place, which is by no means an exaggeration. /kloc-more than 0/00.

A few years ago, dozens were found in the original rented house, and it is estimated that there are thousands more behind. I've tried more than a dozen methods, but it didn't work. There are cockroach spray (bought 5-6 cans, 4-5 kinds), cockroach house (what a lovely name it sounds, but it is a horrible destination for cockroaches, and it will be stuck and starved to death), sticky paper, patented electronic cockroach killer (attracted by bait+warmed and then roasted to death), borax (a chemical substance that mops the floor+borax, eventually fearing that dogs will eat it by mistake). It seems that there is still a window freeze, and it doesn't work. Spent more than 1000. Finally, the experiment was carried out in Bayer Company, Germany. Three days later, they died one by one, and after more than a month, they were all gone. I cleaned the house and cleaned up the bodies of many small cockroaches. I haven't seen any of them for the next two years. The main principle of Baimieshi is that the cockroach virus causes cockroach plague (harmless to people), and it doesn't attack until three days later, so the cockroach will infect all the cockroaches in the old nest when it attacks. Ordinary methods can only kill big cockroaches that move outside, but can't kill countless small cockroaches that you can't see. Cockroaches have lived on the earth for 300 million years because they are extremely timid and afraid of light. Yes, cockroaches were basically like this 300 million years ago. Dinosaurs were hit by asteroids and the earth became extinct. The cockroach is not dead, so it is difficult for you to kill him. Germany is awesome, Bayer is awesome, and modern technology is awesome.