A household must be living in the state in which it files an application. In any month no individual may participate as a member of more than one household nor may any household participate in more than one state. The only individuals exempt from these dual participation restrictions are certain residents of shelters for battered women and their children as defined in durational residency or fixed residency requirement. For example, migrant campsites satisfy the residency requirement. Residency does not require an intent to live in the area permanently. However, individuals in an area solely for vacation purposes are not considered residents. An otherwise eligible household is not required to live in a permanent dwelling or have a fixed mailing address as a condition of eligibility.