Roaches
Roaches are very hard to exterminate. They can build up resistance to the pesticides that you regularly use. Home extermination techniques involve constant spraying. There are insecticidal chalks, and even paste that you can put around your home to eliminate these pests.
There you have it, the DIY advice for home extermination of pests. It’s not easy to get rid of them. The moment you see them around your house, they may have already built a colony, so it will take patience for you to exterminate them completely. Practice cleanliness around your house and you will keep those pests away from your home, and that is the best way to deal with them.