I dumped a new sack of feed on my other feed last night after dark and filled the feeders. Today I discovered it was mouldy. I scooped out what I could but that doesn't do anything for all the feed they have already eaten. Do I just wait and see what happens or should I do something for them. Is there anything I can do for them? I have already lost so many this summer to the heat. I can't stand the thought of more dying.