First, if the puncture is on the foot, and if there is a broken nail involved, clip back the damaged nail pieces. If the nail is broken at the base, contact a veterinarian.
Soak the punctured or infected area in a warm Epsom salt bath for about fifteen minutes, and then pat dry with paper towels. If there is embedded debris under the skin, try to remove it with sterilized tweezers. If there is a deeply implanted sliver that continues to be a problem, and you can’t get it out, see a veterinarian. Don’t dig into your pet’s foot.
If you don’t have Epsom salts, or if you can’t soak the area, simply wash it with a natural soap and water. Soaking is best, though, because the salts ease inflammation, and they help draw out toxins and embedded material.
Disinfect by pouring povidone-iodine (Betadine or a generic) on the area, or apply it using sterile gauze pads. After the antiseptic dries, you may apply calendula, diluted tea tree oil, or an antibiotic ointment. Calendula helps with healing and it inhibits the growth of bacteria. Tea tree oil has antiseptic and antibacterial properties. If the puncture is not too serious, some aloe vera will also help speed up the healing process.
If possible, and if bleeding is excessive, apply a bandage. See Bandaging.
Give a few pellets of homeopathic Ledum 30c every two hours for three treatments.