a first? not so sure about that. What is propolis if not a tool? The little bugs dig out tree sap, mix it with saliva, and plug up holes in their homes to keep

a first? not so sure about that. What is propolis if not a tool? The little bugs dig out tree sap, mix it with saliva, and plug up holes in their homes to keep out cold and bugs and we have known about it forever. It's in our hippy shampoo and cosmetics!