HelloYour dog should be treated with selamectina (Stronghold) if it's scabies sarcóptica. A pipette per month for 3-6 months. If it's other deb sarnas treated with ivermectin, moxidectina, etc. Wounds must treat them with antibiotics as the cefalexin and wash them with chlorhexidine 1-3%.
I hope you have been of help.