Keep the mess in the towel then throw the towel in the laundry when you get home from your trip.
Homemade laundry detergent. We have friends that tried this and won't use anything else. They say it smells fantastic. -- new recipe
Turn whites back to white whites. It's a laundry miracle!
The Duggars' Homemade Liquid Laundry Detergent - $0.01 / load