How to use Feng Shui to make an overstayed welcome parent move out of your house?

I am need of advice on how to use feng shui or any other tips to make my father move out of mine and my husband's house. He has been here too long and doesn't not seem to have any notion to leave. He is retired and says he just wants to be around us! His stay is getting bothersome to us but we do not want to hurt his feelings. I was hoping there was some feng shui cure for this but can't seem to find any. And we are in the process of trying to sell our house, so the feng shui correction can not interfere with that.
Thanks!
I just want to add that my father is healthy and has retired with a good deal of money. He does not "need" to stay with us. He can easliy afford something close to us. We love him dearly but as an adult, you move out of your parents house and you don't expect them to move back in with you - especially since he does not need to be cared for. It puts a strain on our marriage (only 4 years married) because we sometimes have no time to ourselves. I just want some advice on how to help him understand that we need our space too!
For those of you who feel sorry for my dad that I feel this way, you should know one more thing...
He does not help out with money, groceries or anything but expects me to cook and clean for him. He also sits out back of my house almost every day and just drinks beer - sometimes 12 a day. Now, I have 3 children - 12, 3 and 5 months and this is something that I don't want them exposed to. My dad can't even help babysit if I need to do something because he typically has already had too many beers.

View this post on my blog: http://madeinhome.info/how-to-use-feng-shui-to-make-an-overstayed-welcome-parent-move-out-of-your-house