My wife snagged this book at Half-Price books and I have greatly enjoyed it. I got it too late to put out nest blocks, but given that I have a strict "No killing the mason bees" rule and that I have hundreds in the siding of my house, I'll probably be ok to catch some more next year. The author, while obviously a fan of Mason bees, is quite clear on where Mason bees excel and where Honeybees win on sheer numbers. While he does sell nesting blocks & such the book is repleat with simple statements that there's no need to buy - you can build something they'll use just as well. Covers a number of relatives of the mason bee as well. Next year I'm going to hang out a bee block and acquire some masons.