The size of the trap
The trap is big enough to recreate an ideal laying place for mosquitoes and be self-sufficient with small fishes.
Its small size makes it easily transportable, reduces its cost and allows us to install more and more in our environment.
Its small size allows an easy installation in our environment, gardens and terraces as the trap may be placed on the floor.
It is highly recommended to favor several traps instead of a big pond located around places of nuisance; as the latter would not necessarily corresponds to mosquitoes especially if it is equipped with a filtration system which could troubles the laying.
Water should be stagnant.