I wash my white birds (White smooth, White Frizzle, and Columbians) in Tide laundry detergent (Tide with bleach alternative) I make sure each bird spends at least 5 minutes in the wash water to work on stains and let the detergent do its job. Then the next 3 steps are the same for any Cochin. #2 rinse in vinegar water to cut suds #3 clean water rinse..#4 and some do not do this step. but I rinse in water and Downey fabric softener. Wrap in a towel for 10 minutes then dry them. In the summer I let them loose in the yard and let them dry normally and in the winter I use a hair dryer kept at least 12 " from the bird.
Which brings me to a question. For those who show, do you use a special shampoo or anything on your white Cochins and if so, what do you use? Or just keep them up in cages during their show career.
I let my birds run in the field next to the poultry bldg sometimes but if I have a show coming the bird is caged. I will let many of my birds run free now that breeding season is almost done and I am done showing until Labor day.