Re: Cockroaches in Vivarium - Is this plan OK?
The Pest Control industry incorporates a Test Trap strategy. These small cardboard or plastic traps are baited and placed in buildings before treatment - the tech returns, trained to read the traps, to determine infestation levels per intensity and placement locale, using the number of roaches caught + time frame.
The bottle method mimics a read trap in my opinion. Its exciting to catch a few. Better to catch a cluster of 11, 30, 47, in one retrieve.
A population of small individuals can exist undetected for months.
For every one or two roaches caught - adding warmth will turn the read trap into a multiplicity of strong reduction. Using a 'toothier' textured trap, and warmth, turns the 3 overnight into 11, or 26. Or, after a week undisturbed - 20, 30.
Even without a food resource, warmth draws the insects. The Air Compressor for the airline tubes in the aquatic section was located in a very dry and austere area, yet roaches and crickets collected on it nocturnally, covering it in a solid layer of guano.
Other areas were lamp sockets, flo fixtures, the top of the water heater.