Until now the only solution for cockroaches in drains and septic tanks was to call in a septic tank company to clear our your septic tank (optimistic as very few companies use insecticides) or to get the council to insecticide or smoke out the drains. The latter is often the cause of many infestations in dwellings, as escaping cockroaches find refuge in nearby houses.
How the Mass Exterminator box works.
Each box is filled with a generous helping of attractant and cockroach poison. The poison begins to work a few hours after ingestion by the roach. Time enough in fact for the roach to have returned to its hideaway. This time period is crucial as it allows the cockroach to die in its hideaway. Once dead it will then be eaten by other cockroaches and the extermination quickly spirals through the entire population. Thus if the roach came from a septic tank or sewer, it will bring back the poison and be the start of infection the other cockroaches in the colony.
So rather that pouring insecticides down drains or lifting septic tank covers, the cockroaches themselves administer the poison to the colony, no matter where it is.
Remove plastic lid, pierce the plastic bag inside, (containing the bait/poison) a few times. Replace the plastic lid and place the box near to the exterior problem area. e.g Broken septic tank cover.
Place a ceramic tile over the box to prevent dogs etc from removing it.
Keep the boxes topped up with poison and you have a long term solution for cockroaches in drains and septic tanks.