50 ct bag. These empty white paper tube inserts slide securely into and out of our mason bee brown guard tubes. The liners keep the brown cardboard tubes free of disease and pests. Using these liners will ensure that you can safely remove the cocoons from the cardboard tubes at hibernation. After removing from the guard tubes, the cocoons can be harvested, cleaned, and stored.
Approx 6" in length and 8mm diameter.