These are our reeds the mason bees nested in spring, summer. We use new unused reeds every spring for the bees to nest in. These reeds have bee cocoons inside for sale for spring, summer pollination. These are very easy to use just insert these reeds into a mason bee house with empty reeds for the bees to nest in and you're ready to pollinate. We have bee care, help page information page for customers to read . We send a help ,care, suggestion page with bee orders.