I just wanted to thank everyone again for your support. The flea problem is solved, thanks to all of your helpful ideas. I haven't seen any on Prince yesterday, nor this morning. I'm still using the flea comb as I check. One thing that I did was to buy a flea coller, (NOT for Prince!) and put it in my vacuum bag to kill the fleas and eggs as they are sucked in.
Now I am dealing with his CT problem.