Nirlife Sodium Chloride 0.9% Infusion is meant for intravenous use in medical settings and is not suitable for treating an infected ear piercing. For a rook piercing infection, gentle cleaning with sterile saline solution or warm saltwater soaks is usually recommended. Avoid using IV fluids directly, as they are not intended for this purpose. If you have persistent pain, swelling, or discharge, please consult a doctor for proper treatment.