What keeps a cockroach group in one kitchen?
Shelter, water and food keep a group in place. Cleaning the counter affects only the food, while the shelter behind the cabinet and the water under the sink keep the group alive. The walk looks for all three.
A group chooses a hiding place that is warm, dark and close to a supply of food and water. The space behind a refrigerator, the gap at the back of a cabinet and the cavity under a stove are typical. The insects leave those places at night and return before dawn.
Water is the factor households underestimate. A group can survive a long time on a single drip, and the walk records every damp spot, including the condensation on a cold pipe and the wet tray under a fridge.
Food is the most visible factor and the easiest to change. Sealed containers, a clean counter and emptied bins reduce the supply, but they do not change the shelter or the water, which is why cleaning alone rarely ends a group.
How is the treatment placed so it reaches the group?
The treatment goes into the cracks, the voids and the seams where the insects rest, not on the open surfaces where they are seen. Placement follows the label, and monitors show whether the group is moving through the treated spaces.
Roaches walk in the same cracks they rest in, so the product has to be placed there to reach them. A treatment on a countertop is seen by the insects but rarely meets the group in its hiding place. The walk therefore places product at the seams, the gaps behind the appliances and the joints at the base of the cabinets.
The label controls the placement, the amount and the time before people and pets return. A product that is labelled for a crack or a void is not placed on a food surface, and the household is told which spaces were treated.
Monitors are placed beside the treatment and along the routes the group uses. Their counts at the follow-up show whether the group is falling, and they tell the technician whether the placement reached the source.
What does the follow-up tell the household?
The follow-up counts the monitors, looks at the treated spots and checks for fresh signs such as egg cases and droppings. The result shows whether the group is shrinking and whether another step is needed.
A follow-up is set after enough time for the group to contact the product and for the monitors to fill. The technician counts the monitors first, then looks at the treated spots, then at the places where signs were seen before.
A falling count is the result the plan expects. A count that holds steady, or a fresh egg case in a treated seam, means the shelter or the water is still available, and the next step is decided on the spot with the household.
The household is asked to note any roach seen between visits, with the room and the time. A sighting in a room that was treated is useful; a sighting in a room that was not treated is a reason to widen the plan.
