Providing a cleanable and reusable Mason bee house is critical to long term success. After each season you must remove your Mason Bee cocoons and clean the Mason Bee nesting site, it is easy to do with these reusable Mason Bee houses.
If you use Kraft paper nesting tubes, your mason bees are not protected from predator wasps and Kraft paper tubes are a bitc* to clean. If you don’t clean them the following year you’ll lose your bees to mold and pollen mites. Bamboo tubes are safer but even harder to clean, and neither are reusable.