Yes, any strength Baytril can cause burns, scarring and sometimes abscessing. I have always told people to inject a small amount of sterile saline into the area either IM or SC, and then inject the Baytril into that. It dilutes the Baytril down so it isn't so acidic. Baytril really should be given IM, like Penicillin. Some vets like to use it SC, but you end up with the scarring and tissue sloughing if the strength is too high.

If you do have to give antibiotic injections again, get some Lactated Ringer's solution or some sterile saline from the vet and inject about 2-4ml under the skin before the Baytril injection. It can be nasty, but it's a wonderful drug.