When outside temperatures go above 80 degrees, change sugar-water every 2-3 days or sooner if nectar appears cloudy. Do not fill your feeders completely if you only have a “few” hummers. This will cut back on waste.
NEVER “top-off” the sugar-water always empty completely, rinse, and refill with fresh nectar. About once a week you will really need to give your feeders a good cleaning to remove any black mold that may have accumulated. It works best to do this at night or with a system of rotating feeders.
Cleaning Hummingbird Feeders
The easiest and most effective way to do this “deep” cleaning is to dismantle your feeders and submerge them in a solution of ¼ cup of household bleach to 1 gallon of hot water. Let them soak for at least 20 minutes and then rinse, rinse, rinse and refill and rehang. Please do NOT use soap to clean feeders it leaves a residue.
During winter months you can stretch out the changing of sugar-water to 7-10 days but always watch and change sooner if the nectar gets cloudy. Sugar water freezes at 27 degrees so always PARTIALLY fill feeders in winter to avoid breakage when temperatures get low.