ULTRA BOSS POUR-ON INSECT QT<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>by Intervet/Merck</li><li>Broad spectrum and fast acting insecticide against lice， horn flies， face flies， horse flies， stable flies， mosquitos， black flies， and ticks. 1 oz or 30ml will treat an 1100 lb horse. (Do not treat more than every 2 weeks).</li><li>Fast-acting 5% Permethrin formulation with 5% Piperonyl Butoxide optimizes control.</li><li>Effective horn fly control for 8 weeks. Also controls face flies.</li><li>Season-long lice control with one application (January through April).</li></ul></div><img src="http://ecx.images-amazon.com/images/I/4195qOaEZxL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51uiQm%2BbtoL.jpg" noproxy>