Things You'll Need
Instructions
Clean birdhouses of nesting material once a year. The best time is after breeding has finished. Bluebirds and wrens raise multiple broods each season. If your canister birdhouse is occupied by these birds, they will reuse their nesting materials within one season.
Remove old nesting material after fledglings have flown away. Canister birdhouses have a removable plastic or wooden lid as the top of the house. Take this off to open the canister for cleaning.
Scrub the inside of the canister with a bleach solution. Mix this in a ratio of one part bleach to nine parts water.
Rinse and dry the can completely.
Check any hanging hardware to see it is in stable condition.