L.A.
Ugh, Whinning is the worst!
We are in a neighborhood that at one time we had 13 little girls.We all used "Use your regular voice." "I do not understand whining." and for really bad whining, "go to your room and find your regular voice."
We also all made an agreement, no child would get what they asked for if they were using a whining voice.. It works, but it is not magic.. You have to be consistent..