Getting rid of roaches involves more than just spraying an insecticide or putting down a bait or dust. Roaches get into everything, multiply rapidly, and can survive for several months without food and up to two weeks without water. These little pests definitely pose a challenge, but with the proper tools and roach killer products, you can win the battle over roaches by following this roach management program. The best way to get rid of roaches includes a complete roach treatment process with two basic steps: sanitation/preparation, and the actual product applications.