Inclusion Criteria

Inclusion Criteria (adult):

- Age 18 years or older

- Female

- Smoked ≥ 1 cigarettes per day for at least the past 6 months

- Smoked on 20 days or more in the last month

- Smoking status confirmed via cotinine verification strips

- Resides with a child ≤ 10 years of age in the role of the child's parent or caregiver

- Will agree to provide a urine sample at study enrollment

- Will also agree to the child providing a urine sample at study enrollment and at
follow-up visits (for children who are not toilet trained, a diaper sample will be
collected in lieu of the urine sample)

- Has a home address

- Has a functioning home phone or cell phone

- Provides written informed consent

Inclusion criteria (child):

- < or = 10 years of age

- Non-smoker -no cigarette use within prior 30 days to enrollment; however
experimentation with smoking (a puff) will not exclude the child

- Lives in the primary home with the adult study participant at least 5 days a week

Exclusion criteria (adult):

- Current or past 7 day use of Nicotine Replacement Therapy (NRT) or pharmacotherapy
for smoking cessation

- Planning to move outside of Minnesota within the next 3 months

- Have complete home smoking restrictions currently in place verified by the nicotine
dosimeter

- Currently pregnant