My boy will not eat if I put the rat in water... its pretty annoying but haha what ever works. I've wasted a few rats now just testing to see what he will eat.
I have to just leave the rat sitting on a pile of paper towels on top of his cage for 3-5 hours then hit the head with a blow dryer on low for about 10 minutes and he will take it in seconds.
I've tried while having the rat sitting out all day to also thaw another one in the water then hit it with the blow drier and offer him the one that had been in water. He just will not take it, picky little thing. But 10 minutes later when I offer him the one that had been sitting out will snatch it up!
My only assumption is somehow thawing in the water makes it smell different? I will try with spring water and distilled water this next week.