2. Keep the house dry and try not to have a wet shade. Cockroaches like it!
3. If there are many families, kill them with dichlorvos first. Then use cockroaches to stick them in places where they often appear. Must be used continuously. And cockroaches live in groups. Don't just stick to 1 or 2 and throw them away.
4. Try to find a property and come to a building for collective spraying.
Cockroaches breed by their tails, and when they are frightened, they will throw off their tails. So try not to kill cockroaches by stepping on them, which may lead to cockroaches in every room of your house. As long as you step on a cockroach, you must burn your shoes and cockroaches to kill the eggs. In addition, you have to see if there is this shell in the place where you killed the cockroach. Be sure to get rid of it! !
That's how my family kills cockroaches. I hope it works for you. Original bonus points!