You need a lot of pages with normal content. Instead of spending the time to make fake pages, give the real ones content. This will also give your visitors something to come back to. Content has been reprinted with permission of the author. If there is one thing I have learned about robots, it is that there is absolutely no pattern to them.
Most robots are stupid and wander randomly.
Then they come back a week later, ask for the same thing and then go away, again. This happens over and over again for months. I have never figured it out. If they wanted to see if the website was really a web site, they could just Ping it. This would be much faster and much more efficient.