Roaches are not a cleanliness problem — plenty of spotless kitchens still see them. They are a moisture, harborage, and food-access problem. Fix those three and you fix the roach.
1. Dry the sink every night
A German roach can go a month without food but barely a week without water. A wet sponge left in a wet sink is a roach buffet. Wring the sponge, wipe the sink dry, and you have removed their easiest water source.
2. Store dry goods in glass or hard plastic
Cardboard cereal boxes and paper flour bags are not barriers. Decant pantry staples into sealed containers. You will also notice pantry moths disappear as a bonus.
3. Take out the trash before bed
Roaches forage at night. A full kitchen trash can after dark is an open invitation. A lidded can emptied nightly is not.
If nightly emptying is not realistic, switch to a step-can with a tight gasket lid.
4. Seal the harborage
Roaches need tight cracks to feel safe. Caulk the gap behind the stove, under the dishwasher, around plumbing penetrations under the sink, and along baseboards. Every sealed gap is a hiding spot eliminated.
Pay special attention to the corners of cabinets and the seam where the counter meets the wall.
5. Bait, do not spray, the active spots
Contact sprays kill the roaches you see. Baits kill the ones you do not. Place pea-sized dabs of a quality gel bait near hinges, behind appliances, and inside cabinet corners. Resist the urge to spray over the bait — it contaminates it.
Botanical contact sprays still have a role for entry points along the exterior of the home.
6. Inspect grocery bags and cardboard
Most kitchen infestations start as a single egg case hitchhiking in on cardboard. Break down boxes and recycle them the same day they enter the house.
7. Run a monthly perimeter treatment
Spray the exterior foundation and around door thresholds with a botanical residual once a month in warm weather. Stopping the next wave outside is far easier than chasing them inside.
Roaches thrive on water, hiding spots, and crumbs. Remove the three and you remove the roach — no fog, no panic, no problem.