I ordered that book from Amazon early this week for Cosmo whom I've had for 3 weeks now. We are doing the crate/x-pen thing and clicker training for outside potty, plus potty bells..lol.
He really caught on to the potty bells too much where he dings the bells just to go outside and goof off so that's when I brought the clicker into play. He goes potty, click, treat and that's it. If he goes out for a few minutes and goofs off in we come in.
I love the potty bell idea but they are so smart and catch on so quickly that oh I get to ring the bell and they jump up and let me outside.
I'll let you all know how I llike this book when I get it and try it out on Cosmo.