That's almost exactly what happened to me! I have a 177g mouser and she was taking F/T adult mice. She won't eat two in one sitting, so I have having to feed her multiple times a week. However, she was eating for me. They say spiders are good eaters, but she's my pickiest one! About 5 days ago I had a leftover rat pinky/fuzzy that my male didn't need (I bought him a weanling to try and eat and he snatched that one up so I decided not to double feed him since the weanling is pretty big for him). I put the live fuzzy rat in with the spider mouser and she snatched it up right away! So yesterday I bought her a rat pup and she gobbled it up. So no more mice for her now that I know she'll eat rats. Next week, I'll try and get her to take a F/T rat from me since I know she'll eat F/T off the tongs.