Park chairs, constantly exposed to moisture and organic debris, frequently develop fungal growth that compromises both aesthetics and structural integrity. The most effective antifungal treatment combines immediate mold eradication with preventive measures to inhibit regrowth. For active infestations, a solution of distilled white vinegar and water (1:1 ratio) applied with a stiff brush effectively kills surface mold without environmental toxicity. Alternatively, oxygenated bleach solutions target deeper stains while being safer for surrounding vegetation than chlorine bleach.

Commercial fungicides containing thiabendazole or tebuconazole offer professional-grade protection for public parks, creating long-lasting antimicrobial barriers. After treatment, applying a water-repellent sealant prevents moisture absorption—the primary cause of fungal colonization. Regular maintenance including brushing off leaves and ensuring proper drainage significantly reduces recurrence risks. For severe wood rot, replacing affected slats may be necessary before antifungal application. These methods collectively provide comprehensive protection against fungal degradation while maintaining public safety and extending furniture lifespan.