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    The Thai Health Promotion Foundation tasked Grey Thailand with addressing the severe PM2.5 air pollution caused by seasonal rice straw burning. The client needed a solution that would stop farmers from burning fields without harming their livelihoods or agricultural productivity. The goal was to find a scalable, practical alternative that would make burning obsolete for farmers across Thailand.

    Cannes Lions 2026Bronze· SDG

    Creative Idea

    A microbial formula made burning unnecessary by decomposing crop waste faster and cheaper.

    Instead of banning rice straw burning, the campaign introduced a microbial solution that decomposes crop residue into soil nutrients in days. By making the sustainable alternative faster and cheaper than burning, it eliminated the need for combustion entirely.

    Turning Agricultural Waste Into Gold Dust

    A Scientific Pivot From Guilt


    The campaign succeeded by abandoning traditional "don't burn" messaging, which often alienated farmers who viewed burning as a necessary, low-cost clearing method. By partnering with the Department of Agriculture, the team reframed the issue as an economic opportunity. The microbial starter was not marketed as an environmental tool, but as a cost-saving fertilizer replacement. This shift in narrative was critical; it transformed the farmers from the "problem" into the primary beneficiaries of a new, more efficient agricultural cycle.

    Scaling Through Local Trust


    Production was intentionally grounded in authenticity. Rather than using actors, the creative team documented real farmers across 15 provinces who served as early adopters. The production partners, including Chubcheevit Studio and VISIONARY GROUP, focused on capturing the tangible, visual difference in soil quality and decomposition rates. By showcasing the 65% faster decomposition in real-time, the campaign provided visual proof that resonated far more effectively than any abstract environmental PSA.

    Data Driven Environmental Change


    The project relied on rigorous verification to ensure the messaging remained credible. The team utilized satellite data from GISTDA to track the correlation between the adoption of the microbial starter and the reduction in burning hotspots. This data-backed approach allowed the agency to prove a 21.9% drop in PM2.5 levels during the peak season. This precision was essential for the campaign's credibility, moving it from a standard advertising initiative to a verifiable public health intervention that fundamentally changed land management practices across 96 million square meters of Thai farmland.

    Creative Strategy Deconstructed

    Company

    ThaiHealth leveraged scientific partnerships with the Department of Agriculture to develop an accessible, high-performance microbial decomposition formula for farmers.

    Category

    Government agencies typically rely on ineffective bans, fines, and awareness campaigns that ignore the economic realities of agricultural production.

    Customer

    Farmers needed a cost-effective, time-efficient way to clear fields that didn't compromise their livelihoods or future soil health.

    Culture

    The recurring, severe PM2.5 air pollution crisis created an urgent national demand for tangible, scalable solutions to agricultural burning.

    Strategy:

    Replace harmful habits by providing a superior, economically incentivized alternative that solves the underlying friction.

    Results

    The campaign achieved significant environmental and economic outcomes: a 50% reduction in fertilizer costs for farmers, a 65% faster decomposition rate of rice straw (reduced from 2 weeks to 5-7 days), and adoption across 32 million square meters in its first batch. Ultimately, the solution covered over 96 million square meters of rice fields, leading to a 19.4% reduction in rice-field burning hotspots (2025 vs 2024) and a 21.9% reduction in PM2.5 levels (equivalent to a 10.6 μg/m³ decrease).

    21.9%

    PM2.5 reduction

    96M sq.m

    Rice fields prepared without burning

    50%

    Reduction in fertilizer costs

    Strategy Technique

    Solve a Daily Annoyance

    The campaign identified the farmers' need for a fast, cheap way to clear fields. By solving this specific operational frustration, it removed the root cause of the environmental pollution.

    Explore Technique

    Creative Technique

    Unexpected Utility

    The campaign provided a functional tool that solved the farmers' economic and time-based constraints. This utility directly replaced the harmful behavior of burning with a beneficial agricultural practice.

    Explore Technique

    Craft Breakdown

    This campaign excels by transforming a complex scientific innovation into a simple, highly accessible agricultural product. The integration of biotechnology with grassroots community adoption elevates it from a standard awareness campaign to a tangible, systemic solution.

    TechnologyExceptional

    Developing a targeted microbial formula to solve a massive environmental crisis at the biological level.

    Design

    Packaging the scientific solution as a familiar, easy-to-use fertilizer product that fits seamlessly into existing farming habits.