Thiabendazole is widely used as a fungicide and anthelmintic. In agriculture, it is applied to fruits and vegetables to prevent fungal diseases during storage and transport, effectively controlling molds and rots. It is also used to treat parasitic worm infections in humans and animals, particularly for conditions like strongyloidiasis and trichinosis. Additionally, it finds application in veterinary medicine to combat internal parasites in livestock. Its antifungal properties make it useful in protecting crops like citrus, bananas, and potatoes, ensuring longer shelf life and reduced post-harvest losses.