Winterization - exterior and interior

A couple things to add: Either purchase a screen cover for your two exhaust holes coming from the furnace to keep mice from building a nest OR (this is what we do)  cover the holes with steel wool, that will keep them out as well.  Secondly, we don't do the antifreeze thing, just use compressed air to blow out your lines, takes about a minute at most.  That way you won't get that nasty antifreeze taste in the spring when you get a drink of water out of your cold water line.   I will use about 1 pint of the pink antifreeze to put in the shower drain and two sink drains.