Greetings, Welcome to Healthcaremagic. Staphylococcal infection is the most common infection related to skin and it also usually infect wounds after surgeries. The first medication which is given in staph infection is combination of amoxicillin + clavulanic acid . This medication covers the infection very well . But many times this infection becomes resistance to this antibiotic. In that case there are other medications . But a pus sample is tested in order to know which antibiotic is effective in such cases. That way we can give the exact effective drug and hence have higher chances of recovery. As far as you wound is concerned , it is important to know if you wound seems to be infected on inspection . Or do you have fever . If so then you need treatment and wound care would also be needed . IF you dont have these problems then there is nothing to worry about. As long as your blood sugars are continuously well controlled your infection will be also well controlled. Smoking in addition to diabetes rings alarm bells , So i recommend strongly to quit smoking now before its too late. Ointment can be given like polyfax ointment , But has limited role if infection is wide spread. I hope the answer was helpful. In case you need any further assistance feel free to contact in writing. Regards Dr Talal Hussain