Nature’s Defense Water-Based Fly Repellent Spray is a botanical, alcohol-free solution for effective pest control, combining citronella with clove, cornmint, and thyme oils to repel horn, stable, house, horse, and deer flies, as well as mosquitoes and gnats. Free from preservatives, additives, and artificial colors, it is gentle on sensitive skin and available in both a ready-to-use 32 oz. spray and a 32 oz. concentrate, making it a feel-good addition to any fly control program.