Thanks for your query, albeit short and specific.
Yes, you can certainly try to clean the yellow pus out of abscess. Use copious amounts of Hydrogen Peroxide and liquid povidone-iodine at least twice daily and apply a sterile bandage.
Consulting a Doctor or a Dresser can help you have early and proper healing and an added prescription for an antibiotic and supportive medicines to help control the infection at the earliest and properly.
I hope this answers your query.
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