Boric acid dust can even be used straight to cracks and crevices. The dust is really an oral poison which the cockroach consumes even though grooming. Mix 3 teaspoons of boric acid and 3 teaspoons of sugar (add flour to help make a dough) and area in parts in which https://simonbhfbw.blogolize.com/the-ultimate-guide-to-cockroach-control-sydney-67597956