Found little white balls on feather shafts on my hens' vent area so I immediatley massaged DE under feathers and the whole butt area where the (what I think are lice eggs) are mostly. then i bought permetrin dust , should I wait ? Or just use the permethrin now, only one day after the DE? I cleaned out nesting boxes and treated with DE also and today I have to clean out the whole coop, I plan on getting a spray permethrin solution to use in the coop. (its too cold to get the chickens wet so I got the dust for them, the liquid / spray for coop)