My chicken has only laid eggs for about a year and then hasn't laid any since. She quit laying in the last part of summer when it was hot. She acts fine and has never molted. Has never laid on any eggs either. Shes half silkie and half cochan. I've never seen worms in the coop but I've never wormed her. Tractor Supply has something called Wazine. I use Diatomaceous Earth to control mites and bugs but I don't really see it working for internal worms. It's suppose to dry up bugs and it seems like it would dry up my chicken if I used enough to dry the worms out internally. I have tested it on bugs from my garden and mites in coop and it does work for killing bugs that way. What do you think the problem is for why she isn't laying eggs anymore? I've never wormed a chicken before. I also have a roo. He doesn't stay in the coop, should I worm him if I worm her? Hopefully it's just something I can put in water or food because I don't touch the chicken or roo. They do there own thing and the roo seems like he gets mad if I mess with his hen. He's never attacked me but he is protective of her.