Thissuper-concentrated liquid Wilderness Wash goes a long way and is gentle on fabrics and skin but effective on dishes and laundry stains. It is biodegradable and fragrance-free. Sea to Summitalso made sure that the bottles it comes in are tough enough and the lids are secure enough so you don't have to worry about the soap leaking in your pack or bag. Use it in accordance with Leave No Trace principles (see below) and it is gentle on the environment, too.