Use fresh syrup

Preparing fresh sugar syrup regularly and avoiding extended storage in feeders is the most effective way to prevent fermentation. Syrup should be made in batches that will be consumed within a few days, especially in warm weather. Avoid leaving syrup in feeders for prolonged periods, as this allows time for yeast and bacteria to grow and initiate fermentation. Regularly replacing syrup with freshly prepared batches eliminates the risk of bees consuming fermented feed. Prepare syrup as needed and monitor feeder consumption rates to gauge batch sizes.