Ok so I'm about to try f/t rat for the first time. I've had it in a zip lock bag and in warm/hot water for the last hour. It feels like it should be ready to go. Is there a way to know for sure? Any tips on getting her to take it? I plan on using tongs and dangling it in front of her hide. Should I warm it up at all? I'd really love for her to take this but if not it's back to the store for a live one.