Mosquitoe repellant required for Wolrd Cup

It seems that Bangladesh are very keen to ensure that the opening ceremony in Dhaka isn't marred by everyone involved getting eaten alive by mozzies according to the BBC. They're "deploying special teams" to wipe out mosquitoes apparently....if it was that easy then why can't these teams be deployed to The Isle of Skye and other places like that where you can't leave your house without losing a large proportion of your blood?