No dishwasher or laundry in my place in Flagstaff. I split one gallon of RV antifreeze between 1 kitchen sink, 2 bathroom sinks, 2 toilets, and a bathtub - no freezing problems in 8 years. Just put a couple of glugs down each drain and in the toilet bowls and tanks.
My biggest winterizing problem, not much I can do about it, has been the freezer compartment of the refrigerator. The thermostat in a fridge is designed to keep the temperature in the fridge compartment at the setpoint, typically 37 degrees or so. So when the inside temperature of my cabin drops below that point, the compressor hardly ever runs, and the temperature in the freezer climbs, letting whatever's in there thaw out. So in the wintertime we don't leave much but ice cube trays in the freezer. Took me a while to figure that one out - I thought the fridge was bad.
Any of you out there that are refrigeration repairmen (I'm thinking of you, Stormin) feel free to correct me if I'm horribly misinformed.
Jerry