My mates bitch has had this rash or cut for 3 weeks, don’t no what’s it’s caused by, but tried savalon, hibiscrub, triscrub, salt water, leucillin antibacterial spray, antibiotics for a few days nothing seems to be clearing it i said purple spray it but he won’t cause he wants to keep a eye on it we’re purple spray covers everything. what’s people suggestions to me it don’t look like a vet job as of yet? Thanks Jamie