Diarrhea remains a significant public health concern in Eastern Democratic Republic of Congo (DRC), particularly among young children. A randomized controlled trial was conducted with 500 participants randomly assigned to either an intervention group or a control group. Randomization ensured balanced distribution of baseline characteristics across groups. The proportion of children who experienced diarrhea in the intervention group (12%) was significantly lower than that in the control group (18%), but this difference did not reach statistical significance due to inherent variability within the sample size. Community-based interventions show promise for reducing diarrhea incidence among young children, warranting further investigation and scaling up of successful elements. Further studies should focus on refining intervention strategies targeting specific risk factors in Eastern DRC. Health education programmes may be enhanced by incorporating local languages to improve acceptance. Treatment effect was estimated with $\text{logit}(p_i)=\beta_0+\beta^\top X_i$, and uncertainty reported using confidence-interval based inference.