There are many ways to get your dog up to weight 12 hours before a show.

Match ANY dog and you could possibly be saying bye bye to your money and your dog. I have never seen dex be the reason of a dog losing personally. I certainly won't sit here and say it can't happen due to the stupidity regularly on display from people and a little knowledge. I can say that, again, the times I've used dex before a show, I've never seen any issues from using it. Again, so many things can be figured out BEFORE with individual dogs that there simply isn't any reason to go into any show unprepared.