We use the Purex sheets too. Takes up very little room in the suitcase, smells good, and does a good job getting the clothes clean. Purex.com sometimes has coupons. We bought a box last year and just transferred the sheets to a ziploc baggie that we keep with the luggage. We only do a load or 2 each trip, with usually 2 trips a year, so that box will last a while.