i looking for something liquidy i can spray in the coop to kill mites, i seem to have a large infestation in one of the houses (its the same house that gets infested every year...the only 'shop' bought house, all the others we made ourselves and have never had a problem!) i tried dust and powders but cant quite get it in the nooks and crannys of this house, so thought id get a liquid and spray it with a mister. so can i perhaps use ivermectin for the house or would that be useless?? what else could be used??