A possible cause of your mucus problem might be the way your home is heated and very dry air. Do you heat with a wood stove and is the humidity level in your home at an acceptable level? I live in Canada and like Minnesota, our cold climate requires a good heating system which often overlooks the humidity factor. The pollutants coming from a wood stove can cause excess mucus to form. I speak from experience. A good air exchange system in your home will help as well or spend your winters in Florida, whatever works for you! Good luck!