Cigarette butts. Three young people in the remote community site discussed this photo during a group interview. It is a photo of a window sill in a home where residents discard their cigarette butts among other rubbish. The participants reported that smoking is common in this remote community; very few households have no smokers living in them. While some households are smoke free inside, many are not.
Johnston et al. BMC Public Health 2012 12:963 doi:10.1186/1471-2458-12-963