Just a sprinkle of this insecticide can kill roaches
Boric acid is believed to be one of the best home remedies for cockroaches. If you’re wondering how to get rid of cockroaches with boric acid, just dust a little bit of this powder in corners and floors and let it sit. When roaches come in contact with it, they die. However boric acid is not effective when it is wet. A word of caution — this powder is poisonous and should be kept out of reach of children and pets at all times.

2: Baking Soda Is a Convenient Home Remedy for Cockroaches

Mix baking soda with sugar to make a killer combination
This method is a classic example of the fish and bait as a solution for how to get rid of roaches. A concoction of baking soda and sugar is an effective cockroach killer and controls the multiplication of these pests. Sugar acts as a bait to attract cockroaches and the baking soda kills them. You just need to identify their hideouts and sprinkle this mixture in those corners.

3: Home Remedies for Cockroaches Recommended by Grandma: Neem