Years ago which makes me sound real old I worked with 15 to 20 head on the fall circuit. Now with our white shortys we use a human shampoo called "So Silver" which works better than anything I have ever used. Im sure that good old Orvus strips the natural oils out more and they stain easier. We have seen blueing stain so if you use it be careful and DO NOT MIX IT WITH ANY OTHER PRODUCT.You have have to buy the shampoo from a salon, as I am sure that it is not available anywhere else. It helps when you have a wife who is a hairdresser!!!! Good luck SCRUBBING.
Get some beefy Charolais, like the Davis Charolais, and you won't need to worry about it, if they're stained. The Judge will do a double-backflip, when He sees this long-forgotten type of Charolais.