Gentian Violet for hens. Also sometimes known as Blue Spray for chickens.
Purple spray or gentian violet spray is used as an antiseptic for minor cuts and abrasions on birds and animals. It can help to treat wounds caused by feather pecking. This is a non-aerosol spray containing 0.5% w/w gentian violet. The bottle comes with a separate spray top that can be attached for ease of use.