Cleaning a-hoy!

I generally don't pay a lot of attention to the cleaners I use in my house. There's never a huge cleaning project that makes me worry about odors or anything. My father's house, however, may be a different story. He has lived in that house for almost 40 years. And in that time, he has smoked like a chimney. As a result, everything is covered in a film of nicotine. I'm hoping to get some good green cleaning products to really scrub down his house to make it more liveable. It is habitable right now; it's just really gross. And I think it will take a long time to make it better.