Dave Dunkel, owner of Sees-the-Day, center, shares a cigarette break with, from left, Zachary Moser, 21, of Montgomery County, Pa.; Nathan Embry, 27, of Lancaster; and Roman Fissel, 22, of Manchester Township, all of whom live in a Sees-the-Day recovery house on Linden Avenue, on Wednesday, Feb. 10, 2016. Many people in recovery are smokers, as cigarettes and nicotine replace the substances they previously used. York is home to a figuratively underground community of about 80 recovery homes that house people with substance use disorders. Many are sent to the houses by York County's probation department as an alternative to jail or homelessness, while others come to York on referral from other treatment facilities or of their own volition. The houses, which are not designed as treatment programs and which can each house 5-12 people in recovery, are not subject to state or county regulations. While owners of many recovery houses in York refused comment, other owners said their homes are structured to provide a system of support and accountability by requiring residents to attend 12-step meetings and gain employment, with the ultimate goal of graduating sober after a residency of about six months.