I use a permethrin dust for lice widely available at any farm/ranch/feed store:
https://www.tractorsupply.com/tsc/product/y-tex-gardstar-garden-poultry-dust?cm_vc=-10005
Rooster Booster has a product with iron, but I'm not real familiar with it:
https://www.tractorsupply.com/tsc/product/rooster-booster-poultry-cell-16-oz
Hoping for the best!
https://www.tractorsupply.com/tsc/product/y-tex-gardstar-garden-poultry-dust?cm_vc=-10005
Rooster Booster has a product with iron, but I'm not real familiar with it:
https://www.tractorsupply.com/tsc/product/rooster-booster-poultry-cell-16-oz
Hoping for the best!