Eliminate Cockroaches - New York State Health Authority
For effective cockroach elimination, remove their: food supplies, shelter, access to water. Evict Them! Essential actions: Use pesticides with caution, only as a last measure...

How to eliminate a cockroach problem in your residence without resorting to...
Ensure there are no attractants like food, then apply a combination of boric acid and diatomaceous earth, sprinkling it...

Best methods to eliminate cockroaches? : r/lifehacks - Reddit
Boric acid outperforms any other method! It's non-toxic to humans and animals, leaves no chemical odor, is inexpensive, and it is effective!