Made of naturally water-repellent sheeps wool, moisture from rain or snow will wick through the felt and around the nest, and will air-dry since wool naturally breathes. Also, wool is thermal; cool in the summer and warm in the winter.
If hung in a protected are outdoors (such as under a roof), these birdhouses will last for years. If placed in direct sun, colors will begin to fade over 2-3 months, but they will retain their shape for more than a year in fully exposed weather.
Do not put in washing machine or dryer. If cleaning is needed, spot clean with water and mild soap, then rinse and air dry.
