Thats interesting. I feed live ASF's and they still go off feed, mostly during the Nov-March time. I just found something that works for me. I offer an hor dourve first, an ASF hopper. If they take it, I follow up 10 minutes later with a mid sized ASF. This worked twice recently, and everyone is back on. I think after a long period of not feeding, a regular sized rodent intimidates. Go figure?