Best overall: Ortho Home Defense Insect Killer - See at Amazon Best contact spray: Raid Ant & Roach Killer Insecticide Spray - See at Amazon Best gel: Advion Cockroach Gel Bait - See at Amazon ...

Professional exterminators typically use chemical insecticides to get rid of roaches, and some are available in products you can buy and apply yourself. Professional exterminators can eradicate ...