That's what I thought from the beginnin

g I did not want to give them anything for worms so that they would become immune to it, but I had people telling me that I should

For treats: they get lots of fruit and vegetable scraps just depending on what I have that day, mealworms occasionally, corn in the winter, and assorted seeds in a water bottle with holes so they kick it around to get it out. Coop size: their house part and nesting boxes I would say is 7-8 feet in length and pretty tall for roosts, the "indoor" part of the run is 7ft. in length and 4 ft. in width, the outdoor part of the run is 8 ft. long and 6 ft. wide. It is well ventilated and dry. They always have plenty of fresh water and seem very content.
I am also going to be extending the outdoor run this summer. I am glad to hear though that y'all that have never given your girls or rooster poultry deformerhave glad no problems!