I just saw on another post where someone said bum genius can only be washed on warm. Do all of you do this? If so, do you do a separate load with just bum genius? I only have one of them, and I've been washing it on hot with the rest of the dipes. I can't realistically do a separate load for just these, and I don't want to wash all my other dipes on warm. What do you all do??