I have both, but which is better. Ive had some of the most horrible predator problems anyone can think of the last two days. In a nut shell, I put one down, 4 diappeared, one injured (this one), and one with ripped feathers from the neck. Anyways, this one is torn into at the neck, Im going to stitch it up, but I want to know which antibiotic is best I got both because I had a silkie that was so bad (leg completely torn off) that I was gonna inject her and give her the other stuff in the water just as a one in a million type of shot, but I ended up having to put her down before I even gave her any antibiotics.