My hedgie usually takes about 2 days to eat his bowl of kibble. With the flax seed oil, do you need to put just the right amount in there for one night and toss anything that's left over, or would it be okay to stay in the bowl for that second day? I've noticed a little bit of dry skin on Quentin (not horribly bad, but I don't want him to have dry skin all winter), and I'm considering using the flax seed oil. I just wasn't sure about that part of it. What do you guys usually do?