Edited sentence: Boric acid dust will get rid of an infestation of cockroaches.Good locations to place the dust are in the spaces under kitchen or bathroom cabinets or under kitchen appliances.The boric acid baits are great because of their low toxicity and ease of use.The dry Boric acid dust is the effective product and is very easy to tell where all the roaches are crawling.The roaches do not take the bait back to the nest.They are not dangerous to use.They must crawl over the dust for it to be effective.To apply bait paste, simply take an amount about three times what you would put on your toothbrush and  put it under sinks, stoves, refrigerators, cupboards, and other water or food sources.You don't need to look for the roach nest.You simply need to know where to get them