Slow-Evaporation Lighter Fluid & Sealed Container

The user is actively testing lighter fluid evaporation rates, and comments suggest existing lighters or butane inserts as alternatives, implying current lighter fluid evaporation is a problem. A specialized lighter fluid formula designed for significantly slower evaporation, paired with a newly designed, highly sealed physical container for storage and refilling, would offer a tangible product improvement for users who prefer fluid lighters but are frustrated by rapid evaporation.