Pus-filled boils are typically bacterial skin infections. For mild boils, apply warm compresses for 10-15 minutes, 3-4 times daily, to help them drain naturally. Never squeeze or pop them, as this can spread the infection. You can apply an over-the-counter antibacterial ointment. However, if the boils are large, painful, spreading, or accompanied by a fever, you may require prescription oral antibiotics (such as cephalexin). I highly recommend consulting a healthcare provider for a proper examination and the correct prescription.