Is it ok to use it for a cat's eye infection? This is an after the fact question, b/c my daughter already did, but it actually seemed t help kitty. I know iit has the warnng on the tube, but we've used it for the chickens eye issues for years, and it's never been anything but helpful. However, researched it ol, and read nothing but bad about using it for cat eye nfections, but no explanation re WHY it is bad....we just havehad a lot of vet bills lately and my daughter thought she was being helpful by using it, trying to clear up this little eye problem in our 7 y.o. kitty. Thoughts?