I tried to upload screen grabs to show you where to put it in the HTML block module, but I apparently do not have the permission to do that.
The module is configured to allow you to put any HTML or PHP wherever on the page. So one line goes to all headers, and the other goes to all footers and you are good to go. It is really not hard and I have very little know how or technical skills in that regard.
However, if datakick turns it into a module, it will rock!, of that I am sure.
However, to be clear, it does not stop everything all the time. It curbs the robots attacks over time. It can take a few days to see the results. You will get a lot of bots at first, then it slows down. We used to have hundreds of fake carts a day, now we have a couple once every few weeks. Eventually, you catch them all and things get slowly back to normal.
Don't expect a miracle on first install. It has to do its job.