Is there a residual effect of permethrin solution sprayed in chicken house? Will the spray keep on killing the mites/lice that may be hiding there? And for how long? Why would poulty mites hide in the coup? I thought they lived on the chicken. :/Is there also residual killing of mites/lice when a chicken is dipped in permethrin solution? Will the dip residue kill off the newly hatched ones? I know it doesn't kill the eggs. Or do we need to repeat both these treatments in 7 to 10 days? Jeez, I hate mites/lice.