Bird feeders should be cleaned regularly — every two weeks to once a month is a good rule, because mold, mildew and bacteria can build up in feeders. Heavily visited feeders may need to be cleaned more often than others. More traffic equals more mess and an increased possibility of disease and illness, so get into the habit of cleaning heavy-traffic feeders each time you refill.
Remove the feeder from its mount or perch and discard any remaining seed or suet from the feeder if the birds haven’t picked it completely clean. Place the discarded food in the trash in case it may be contaminated.
Wear rubber gloves when cleaning out the feeder to protect yourself from bacteria and other possible pathogens, and to avoid contaminating the feeder.
Rake up seeds and hulls, and feces on the ground around the feeder location when you clean the feeder.