Since your wound is still healing after a month, please have your doctor evaluate it to rule out complications. For an affordable, over-the-counter alternative to Neosporin and Mupirocin, you can use Polysporin (double antibiotic) or plain Bacitracin ointment. Alternatively, dermatologists highly recommend plain white petrolatum (Vaseline). It is extremely inexpensive, keeps the wound moist to promote natural healing, and avoids the risk of allergic contact dermatitis often caused by Neosporin. Keep the area clean and protected from pressure. If you notice redness, warmth, or worsening pain, seek medical attention immediately.