How do you speed up the molting in laying chickens?

Drugs or you can't

I posted a link on chicken molting in the related links box below.

You can force molt by turing off the lights in the barn, but therefore they have to be indoor chickens. Turn off the lighs for 3-4 days, which makes the chickens think it is winter. Don't supply as much food and water as usual. Molting lasts about 2 weeks.