How do you control insects in an environmentally friendly way? By using pheromones. Separating the males and the females effectively stops reproduction. It is a natural system that does not use any pesticides.
This environmentally friendly insect trap works with a pheromone that attracts either males or females. The insects then fall into a container with soapy water and drown.
There is a sieve in the container so that the insects can be easily removed and no water is lost. The container has a cover to keep out rainwater.