Say goodbye to flies with the Ultra Shield EX Insecticide and Repellent! Weatherproof, sweat-resistant formula kills and repels biting and nuisance flies, gnats, ticks and mosquitoes. Stays active for up to 17 days. Non-oily, water-based repellent is pleasantly scented with citronella; contains sunscreens and coat conditioners including aloe and lanolin.