1. This oxalic acid evaporator is made of sturdy materials that can withstand the demands of frequent use 2. The usage process is simple and intuitive: Insert the evaporator through the bottom nest door, heat it until the oxalic acid is completely sublimated (usually less than 5 minutes), and the bee treatment can be quickly and efficiently completed 3. Well designed and economically operated, providing excellent performance at a reasonable cost, helping beekeepers effectively manage the health of bee colonies while controlling long-term investment costs. 4. When in use, seal the upper nest door and cracks to prevent the escape of oxalic acid , ensure that the effective ingredients are fully applied to the bee , and ensure the safety of the operating environment. 5. Designed specifically for outdoor bee colonies, suitable for beehives with restricted bottom doors, ensuring that steam circulates fully inside the beehive to achieve optimal treatment results.