My roo, Lt. Colonel Bok Bok was INFESTED with lice. GROSSSSSSSS!!!!! I've dusted him and his dog house with DE 3 times now and when I checked him tonight there were no more lice. There are still 3 large egg clusters around his vent. How do I get rid of those? Should I pick them off (nasty) or will the fall off? Or will they hatch and he'll have lice all over again?