My games do not get dewormed, because either they either carry the load well or the worms have a hard time becoming established in them. American Dominiques are less consistent. Some have no need for deworming while others (all acquired from North Carolina) died from worms. Some of my American Dominiques had trouble with worms so they were penned off the ground, treated with dewormer, fed back up to normal weight, and culled. I am concerned about establishing dewormer resistant worms so treat sparingly.
Birds to be deormed at school are not of my stock and not maintained under conditions that can be readily controlled. Paddock adjacent to chickens used as feed lot for sheep where those get dewormed routinely which my complicate my efforts.
Valbazene it will be.