Hi,
Do you buffer the Pen G when you inject it? That drug burns like H-E-double hockey sticks when it goes in. If it is injected in the same spot or even near the same spot, it will develop a sterile skin abscess. Injections in the same area will also develop scar tissue. The fur will come out and the area will be itchy, may bleed andwill crust over. If this is what is happening, move your injections around. I mix the drugwith a small amount of lactated ringers solution to buffer the burn. Pen G should be administered every other day. I start above the shoulders and work down toward the flanks alternating injections on each side of the spine. That allows a lot of different spots to inject. And sub-q injections can be done on any skin that can be scruffed. I routinely do it in the flank especially in dehydrated animals. I think several folks have named some solutions....we have used Neosporin, Silvadine, Bag Balm and a few others. There is a new ointment called Safe Gel that is great for this too but Safe Gel and Silvadine require a presciption in some states.
Randy