In Denmark, mosquitoes are not of importance as related to public health, and eradication campaigns have been abandoned. The campaigns were carried out in the 1960s and 70s, where puddles and ditches were sprayed with diesel oil in an attempt to suffocate the larvae, and large meadows were treated with insecticide. A more reasonable approach is to eliminate the accumulations of water in which mosquitoes lay their eggs, and where the larvae develop. Today, however, people are more reluctant about draining too much water in the landscape as this result in destroying other organisms’ habitats. Very reasonably – you have to protect yourself from the mosquitoes.