I've got some heifers that are just coming off a battle with pneumonia and I'm trying to get them all back on feed. I've got 3 open heifers in a pen right now and I'm hitting them with the Appetite Express granular in the morning and at night. How long can I safely hit them with the granular in the feed before I start running into problems. Our next show won't be until Denver, but I need to get them eating again. I gave them the ProBios paste when we hit them with the NuFlor just to get them looking at feed again.