Thats exactly what I do too, they had a large rat tonight and I try and give them a varied selection each night there's usually a little left in the morning which tells me they have eaten enough or it would all be gone? I dont have much bother with flies either as they dont tend to be around at night My fat jill has lost weight and looks much better now and they generally seem much happier little ferts. I would only feed dried food if there was absolutely no other option and at times I have been in that situation, they seem to like it ok but they guzzle gallons of water and their poo is awfu