Step One – Identify Where They Hide

Cockroaches are nocturnal and prefer dark, warm, and moist spaces.

Before you treat the problem, locate…

• Behind appliances (fridge, stove, microwave)

• Under sinks and inside cabinets

• Near garbage bins or pet food

• Cracks in baseboards or walls

Use a flashlight at night to spot where they’re hiding or moving.

Step Two – Clean Up Food & Water Sources

Roaches are drawn to food and moisture.

Removing their access is essential…

• Wipe down all kitchen surfaces

• Sweep and vacuum crumbs

• Fix any leaks under sinks

• Empty pet food dishes overnight

• Take out the trash

This makes your space less attractive & forces them out to feed on baits.

Step Three – Use Gel Baits Strategically

Gel baits are one of the most effective overnight roach killers. Apply them in cracks, corners, and along walls near nesting areas. Roaches consume the poison and return to the nest, where they spread it to others through feces and contact.

Popular active ingredients include fipronil or hydramethylnon.

Step Four – Set Out Roach Traps

Place sticky traps in high-traffic areas to…

• Kill roaming roaches

• Monitor activity

• Identify hotspots for future treatment

Check traps the next morning and replace as needed.

Step Five – Use Boric Acid or Diatomaceous Earth (Optional)

Sprinkle a thin layer of boric acid or diatomaceous earth under appliances and in wall voids. These natural powders are deadly to roaches but safe for people and pets when used correctly. Roaches crawl through it, pick it up on their legs, and die within hours.

Step Six – Seal Entry Points

As you treat the infestation, stop more roaches from getting in:

• Seal gaps around doors and windows

• Use caulk to close cracks in walls

• Install mesh on vents and drains

Roach control is more effective when new intruders are blocked out.

Can You Eliminate All Roaches Overnight?

You can kill many roaches in one night especially with gel baits and traps but complete elimination often takes a few days or weeks depending on the infestation size. Taking fast, aggressive action sets you on the right path to being roach-free quickly.