I use detergent sheets and dryer sheets when I travel. The detergent sheets are lighter, take up less room, and there is no chance anything will leak when travelling. They work great! Has anyone done laundry the first full day at sea? We are doing a land/sea tour of Alaska this coming Septemeber and our first full day on the ship would be a good day to wash the clothes we wore on the land portion of our trip. That day we sail to Hubbard Glacier but are only there from 3:00-8 pm so it would be a good day for me to do our clothes.