Objectives. Trends in attitudes and current practices concerning smoki
ng in the home were examined. Methods. Data from population-based surv
eys of adults in Ontario, Canada, were analyzed. Results. Between 1992
and 1996, the percentage of respondents who agreed that parents spend
ing time at home with small children should not smoke increased from 5
1% to 70%. In 1996, 34% of the homes surveyed were smoke-free. Smoke-f
ree homes were associated with nonsmoking respondents and with the pre
sence of children and no daily smokers in the home. Only 20% of homes
with children and any daily smokers were smoke-free. Conclusions. Effo
rts are needed to assist parents in reducing children's exposure to en
vironmental tobacco smoke in the home.