Hummingbird perched on feeder
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The Step You Shouldn't Skip When Cleaning Your Hummingbird Feeder
By ANDREA MARVIN
Failing to regularly clean your feeder causes the buildup of bacteria and disease. To ensure you are thoroughly scrubbing every nook and cranny, fully dismantle it when cleaning.
First, take apart every piece of your feeder and soak them in hot water with diluted bleach or unscented dish soap. Then, use a small feeder mop to scrub off any mold buildup.
During summertime you should do a full cleaning at least once a week. Since the heat and humidity will cause the nectar to ferment, it should be changed every four to five days.
Nectar that has gone bad can make hummingbirds sick, especially if they rely on your feeder. Always store your solution in cool places, like refrigerators, that will keep it fresh.