1.) I have a 12 foot run that is covered in hardware cloth. It is only 3 feet tall making it pain to get into. My FIL and I are raising the height so I can walk in and clean and enjoy my chicken babies. Is it safe to use chicken wire on the top portion? They are in the run until dusk and go into fort Knox at night. 2.) I am using DM to keep mites and lice away but have hear some negative reviews. What should I use for my pampered chicks? Thanks!!!