Clean the house before you go. It's really difficult to do when you're packing and doing laundry and trying to keep the kids occupied, but there is nothing so refreshing after a vacation as a clean house. I've left my house messy before and I've left it clean. This time I worked very hard to get it clean before we left. It was so nice to walk in yesterday and see a clean kitchen, nicely vacuumed floors, and very little clutter.