Ants, bees and wasps at the feeder
A water moat stops ants outright. Bees need a different answer, and the one thing you must never do is apply anything sticky or oily to the hanger.
Cleaning a hummingbird feeder in Florida heat
Every two days in summer, and every feeder you own should come apart far enough to reach the ports. The routine, the tools, and why vinegar beats detergent.