http://www.kiwicare.co.nz/index.cfm/1,150,0,0,html Cluster Flies are large black 'dopey' flies that cluster in swarms in warm dark parts of houses and other buildings to over winter. They can be prevented and controlled by using NO Insects Lawguard Prills, NO Bugs Super and NO Bugs Fumigators. http://www.kiwicare.co.nz/img/logo.gif http://www.kiwicare.co.nz/index.cfm/1,150,0,0,html Hairy Lemon 60 en