I noticed a prolapsed vent on one hen,so I brought her in to wash,get the insides in,and put hem cream on. Anyway while doing those tihngs I noticed the tan little bugs by vent.Looked it up and it is chicken lice. Great. Does anyone use the bag dusting method with SEVIN? Is this the easies? I also read you can use kitten flea spray.Is this a better option to start with? I just cleaned and changed the shavings. Do I need to do so again or just sprinkle some SEVIN in the shavings and on the roosts? What have you done to treat for lice that is easy and effective??? Thank you!!!!!