I've been using Nathan's Sport Wash since before Nathan's acquired it--it used to be called Penguin Sport Wash-and it's the best detergent I've used for washing my cycling clothes and keeping them looking like new! I put the cycling clothes in a wash bag, wash them on the delicate cycle with a medium spin, and then just hang them up to finish drying. Nathan's is instrumental in keeping expensive cycling clothes looking like new even after years of hard use and repeated washings. It's reasonably priced and a bargain when BTD has it on special sale!
Immediately after a ride, I put my cycling clothes in a wash bag, put them in the washer, set it on the delicate cycle with a medium spin cycle, add the Nathan's Sport Wash and turn the washer on. After 37 minutes (on my washer), the cycles are finished and the clothes are ready to hang up to dry (they are almost dry after the spin cycle). Because of this, I have some cycling apparel that is 6 years old, has been worn frequently, and it still looks like new! I highly recommend Nathan's Sport Wash!