materially affecting health and safety.
(vi) Keep the dwelling unit and such other areas as may be assigned to the tenant for the tenant's exclusive use in a clean and safe condition.
(vii) Dispose of all waste from the dwelling unit in a sanitary and safe manner.
(viii) Use in a reasonable manner all electrical, plumbing, sanitary, heating, ventilating, air-conditioning and other facilities, including elevators.
(ix) Refrain from, and cause members of the household and guests to refrain from destroying, defacing, damaging, or removing any part of the dwelling unit or housing project.
(x) Pay reasonable charges (other than for wear and tear) for the repair of damages to the dwelling unit, or to the housing project (including damages to buildings, facilities, or common areas) caused by the tenant, a member of the household or a guest.
(xi) Act, and cause household members and guests to act, in a manner which will not disturb other residents' peaceful enjoyment of their accommodations and will be conducive to maintaining the project in a decent, safe, and sanitary condition.
(xii) Assure that no tenant, member of the tenant's household, guest, or any other person under the tenant's control engages in:
(A) Criminal activity. ( 1 ) Any criminal activity that threatens the health, safety or right to peaceful enjoyment of the premises by other residents.
( 2 ) Any drug-related criminal activity on or off the premises; or
(B) Civil activity. For non-public housing over-income units that are not within mixed-finance projects, any smoking of prohibited tobacco products in the tenant's unit as well as restricted areas, as defined by § 965.653(a) of this chapter, or in other outdoor areas that the PHA has designated as smoke-free.
(xiii) To assure that no member of the household