This study emanates from behaviorism theory and cooperative paradigm, which evaluates the effects of parents' daily household activities regarding littering on children through participatory action research approach. Litter is a socio-cultural environmental issue that degrade environment. Additionally, pre-packed foods and other disposable items contribute to littering as people discard covering items on the ground after consumption. Three children from three families were case studied at home. Semi-structured interviews, pictures, questionnaire and participant observation were used to collect data. Coding process was used to analyse data. The results of the study show that parents' daily household activities has minimal effect on children's awareness of littering. The researcher recommends further studies to explore the impact of parents' daily household activities on children's understanding of environmental issues.