The nice thing about boric acid is that it will kill them later when they are in the walls etc... Roaches will eat their fallen, and ingest the boric acid again

The nice thing about boric acid is that it will kill them later when they are in the walls etc... Roaches will eat their fallen, and ingest the boric acid again killing those ones too. Winged ones you will need to control with screens and closed doors but believe me when I say that's easier to do then get rid of the ones crawling around.