creasote is perfect but its got to be genuine stuff not substitute, you can only buy the genuine stuff from a farm supplier in a 25ltr drum, not diy store stuff as the genuine stuff is now considered dangerous, like everything else if you are an idiot its dangerous........... it will kill all the nasty things in you hen house mites EVERYTHING......... i use it with a brush and a mask, gloves would be a good idea, you cant spray it.....i cut tree branches of different sizes to perch on as they will find the one they like best