The consumer attitudes towards unlawful disposal of solid waste products in Ghana continue to be a challenge in major towns and cities. The attribution theory in social psychology emerged in the literature as a paradigm that seeks to explain the consumer attitudes towards solid waste products disposables that are negative and individualistic. The study adopted a deductive reasoning approach with a positivist research paradigm. A quantitative research approach with an explanatory research design was chosen to aid in achieving the objectives of the study. The population for the study consisted of consumers in Sunyani. A seven hundred and twenty-seven (727) sample was selected through convenience sampling. A structured self-administered questionnaire was designed using a five-point Likert scale for this study. Data collected were analysed using the Structural Equation Modelling (SEM) technique with AMOS v24. The results of the analysis revealed three (3) factors of ability, effort and temperament under the internal attribution factors: among which two (2) dimensions were significantly related to unlawful disposal of solid waste products: effort and temperament. Also, three (3) factors of hostile aggression, learned helplessness and beliefs under the motivational factors were considered. Among the three (3) factors, only one (1) variable was significantly related to the unlawful disposal of solid waste products, namely: learned helplessness. Another three (3) factors of task difficulty, luck and feelings under the situational factors were considered. Based on the three (3) factors, two (2) variables were found significantly related to the unlawful disposal of solid waste products. Three (3) mediation factors (cultural space, advertising message type, media channel type) were in the research model to establish the indirect relationship. The study found that all three (3) factors mediated between the constructs. Thus, cultural space was found to have a significant relationship between internal attribution and unlawful disposal of solid waste products. Similarly, advertising message type was found to have a significant relationship between motivational and unlawful disposal of solid waste products. Lastly, media channel type was found to relate between situational and unlawful disposal of solid waste products. It is recommended that the marketing body, in collaboration with marketing-oriented firms and practitioners, be aided to lead the advocacy for the consumer solid waste products disposables starting from the point of sales and event planning.