I would get live fuzzy rats for the girls. It may be that they just need live food. I have a spider female who wouldn't eat frozen for me. I bought her live and she's never refused a meal since then. Once they've eaten several live meals from you, you can try feeding them frozen again. If they don't eat the rats for you, you may want to try feeding mice. However, I caution you in feeding mice because they can be a pain to switch. Some are easy, some aren't. What were they eating when you purchased them?