Create army of small robots that take on the cockroaches one by one - as a bonus revenue stream you can sell the video feed as a Warhammer 40k movie. This is a

Create army of small robots that take on the cockroaches one by one - as a bonus revenue stream you can sell the video feed as a Warhammer 40k movie. This is almost a joke - I do think that in few years time we will have tech, batteries and software for that - and I think that the mechanical solution of extermination will appeal to a lot of people.