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Hummingbirds · How-to
Hummingbirds · How-to
How to Clean a Hummingbird Feeder
Sugar water spoils fast, and a dirty feeder can harm the birds it is meant to help. This guide sets out a simple cleaning routine, from the National Wildlife Federation, the International Hummingbird Society and the Smithsonian's National Zoo, and shows where their advice differs.
By The Bird Feeder Guide Editorial Team · Research-based from cited sources; we have not tested these products ourselves
Updated October 2026 · Facts verified October 2026
Disclosure: As an Amazon Associate we earn from qualifying purchases. Links to Amazon are search links; we do not show prices because they change.
Quick Answer
Take the feeder apart, scrub every part with hot water and a bottle brush, use a weak vinegar solution, skip soap, rinse well and let it dry completely before refilling (International Hummingbird Society; National Wildlife Federation).
Clean it every time you refill. If you see mold, do a deeper soak in vinegar and water, then rinse thoroughly. Never top off old nectar without cleaning first.
Six steps to a clean feeder
Follow them in order each time you refill.
Step 1
Take it apart
Remove every part you can: the reservoir, feeding ports and perches (International Hummingbird Society).
Step 2
Scrub with hot water
Rinse with hot water and scrub all surfaces with a bottle brush. Pipe cleaners or port brushes help with tiny feeding ports (International Hummingbird Society).
Feeder cleaning brush sets on AmazonStep 3
Use a weak vinegar solution
Clean with hot water, a weak vinegar solution and a scrub brush, then rinse and refill (National Wildlife Federation). The International Hummingbird Society suggests spraying vinegar on the parts, waiting 30 seconds, brushing and rinsing.
Step 4
Skip the soap
The National Wildlife Federation advises avoiding soap because it can leave a harmful residue.
Step 5
Deep clean if you see mold
The National Wildlife Federation suggests a soak of 1 part vinegar to 2 parts warm water for a few hours. The International Hummingbird Society suggests 1 part vinegar to 4 parts water for an hour. Rinse thoroughly either way.
Step 6
Dry, then refill
Let all parts air-dry completely before refilling to avoid mold growth, and avoid topping off without cleaning (International Hummingbird Society). Make fresh nectar at the 1 to 4 ratio.
Best hummingbird feedersWhen to clean
Match the cleaning to the situation.
Every refill
The National Wildlife Federation suggests cleaning the feeder every time you refill it.
Hot weather
Change and clean daily or every other day; mold and bacteria grow quickly in heat (National Wildlife Federation).
Mold spotted
Do the deeper vinegar soak, then rinse and refill.
Cloudy nectar
Change it immediately, whatever the schedule (International Hummingbird Society).
Frequently asked questions
Can I use soap to clean a hummingbird feeder?
The National Wildlife Federation advises against it because soap can leave a harmful residue. Use hot water, a scrub brush and a weak vinegar solution instead.
Why does dirty nectar matter?
The International Hummingbird Society says sugar water ferments quickly in warm weather and can grow mold and bacteria, including fungi and bacteria that may cause deadly infections.
How long should I soak the feeder?
Sources differ. The National Wildlife Federation suggests a few hours in 1 part vinegar to 2 parts warm water; the International Hummingbird Society suggests an hour in 1 part vinegar to 4 parts water. Rinse thoroughly either way. We did not verify bleach guidance from a primary source, so we do not cover it here.
Related guides
Sources and how this guide was made
We read these pages directly and summarized them in our own words.
National Wildlife Federation, Hummingbird Feeders.
International Hummingbird Society, How to Clean Hummingbird Feeders and When to Change the Nectar.
Smithsonian's National Zoo, Hummingbird Nectar Recipe.
Written by the editorial team from the sources above; we have not tested the products linked. See How We Research.
The Bird Feeder Guide publishes research-based buying guides to help backyard birders choose durable, safe feeders. We compare manufacturer specs and published reviews and say clearly when we have not tested a product ourselves.
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