seen this on another site Ivemectin Sheep Drench 3 cc’s to a gallon in the bath water will kill all parasites, lice, mites, flies, depluming mites etc. Give twice monthly and the birds will be pest free. It can be used as a spray, 10 cc’s to the gallon on the loft walls and nests to kill parasites and it is not harmful or will give off any fumes. Never get Ivermectin on your skin or it will penetrate into you. If you are spraying it wear protective gear like a mask and overall suit. Never inhale mist. We have not used anything but ivermectin for parasites in several years. One bath will totally eliminate the stubborn quill mite.