Here are some suggestions for encouraging people to stop littering:

Public Awareness Campaigns: Run engaging public awareness campaigns that highlight the negative impacts of littering and encourage people to properly dispose of their waste. Use a mix of traditional media (posters, billboards, radio/TV ads) and social media to spread the message.

Increase Accessibility of Waste Disposal: Make it easier for people to find and use trash cans, recycling bins, and other waste disposal options. Ensure there are sufficient receptacles in public spaces and high-traffic areas.

Strengthen Enforcement and Fines: Enact and enforce anti-littering laws with meaningful fines or penalties for offenders. Ensure these are consistently applied to deter the behavior.

Community Cleanup Events: Organize regular community cleanup events that bring people together to remove litter from public spaces. This can help raise awareness and foster a sense of civic pride.

Education in Schools: Incorporate anti-littering education into school curricula, teaching students about the environmental impacts and importance of proper waste disposal from a young age.

Positive Reinforcement: Implement programs that reward individuals or communities for maintaining clean public spaces, such as recognition awards or small incentives.

Collaboration with Businesses: Partner with local businesses to sponsor anti-littering initiatives, like providing waste receptacles or supporting cleanup efforts.

Targeting Specific Problem Areas: Identify and focus efforts on areas that are known to have high rates of littering, such as near fast food restaurants, parks, or transit hubs.

The key is to use a multi-pronged approach that addresses the issue from educational, infrastructural, and enforcement perspectives. Consistent messaging and community engagement will be crucial to changing social norms around littering.