How to Disinfect a Wound

Medically reviewed by Sarah Gehrke, RN, MS

Last Updated: November 27, 2023 References

Having a wound is stressful enough without having to worry about infection. Regardless of how shallow or deep the wound is, disinfecting it properly will lower your risk of developing an infection. Cuts (including puncture wounds) and scrapes require different care from wounds that remain after surgery. However, if you take the necessary precautions, you'll be more likely to heal completely without any nasty side effects.

Method 1

Method 1 of 2:

Disinfecting Cuts and Scrapes

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1
Wash your hands. Soap and water are all you need. Work up a good lather. Then, rub your hands together long enough to sing the “Happy Birthday” song. Make sure you get the backs of your hands, fingertips, and under your fingernails, if possible. Dry your hands thoroughly with a clean towel. ^{[1]
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Mayo Clinic
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- If you do not have access to running water, then you can also use an alcohol-based hand sanitizer. Washing your hands with water is best, but using hand sanitizer is better than nothing.
- If you are disinfecting someone else’s wound, then you may also want to put on a pair of clean, disposable vinyl or latex gloves. However, this is not absolutely necessary.
2
Stop the bleeding, if necessary. If the wound hasn't stopped bleeding on its own, place a clean or sterile bandage or gauze over it and apply direct pressure. Do not remove the gauze or bandage until you are certain that the bleeding has stopped or you may pull away tissue and cause the bleeding to start again. Elevate it above the level of your heart. This will direct the blood flow away from the injury point. ^{[2]
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- If you can't raise the wound, apply pressure to a pressure point (an artery above the injury) on the wrist, bicep, at the top of the thigh, or behind the knee. ^{[3]
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  Harvard Medical School
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- If the bleeding doesn't stop after 10 minutes of pressure and elevation, seek medical assistance. Call emergency services if you can't get transportation to the emergency room. ^{[4]
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3
Clean the wound and the surrounding area. Rinse the wound with clean water. This can be either under a faucet or a container filled with water. Use a soapy washcloth to clean around the wound. Avoid getting soap in the wound, as it could cause irritation. Rinse the area with clean water and dry it with a clean towel or cloth. ^{[5]
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- Alternatively, you could clean the wound with salt water and a piece of gauze. Dip the gauze in the salt water and gently blot the wound with it. ^{[6]
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- If any dirt or debris is in the wound, try to remove it with a pair of sterilized tweezers that have been cleaned with rubbing alcohol. Do not use your fingers. Seek medical help if any dirt, debris, or other object is too deep for you to reach or if the wound is deep and has an object inside of it. ^{[7]
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4
Put an over-the-counter topical antibiotic on the wound. This can be ointment like Neosporin. Apply a pea-sized dollop to a cotton swab. Cover the wound with the antibiotic. ^{[8]
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- Check the label first to ensure that you are not allergic to the ingredients in the ointment. The label should list the ingredients and potential allergens.
An appropriately sized band aid, a non-adhesive bandage, a non-stick piece of gauze and medical tape will work. Keep the dressing dry, but keep the wound moist because this will promote faster healing. ^{[9]
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PubMed Central
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Go to source} Change it at least daily, especially after bathing. This will allow the wound to heal and lower your risk of developing an infection. ^{[10]
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American Academy of Family Physicians
Organization devoted to improving the health of patients, families, and communities
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Go to your doctor or the emergency room if you have a deep cut or puncture wound. Tell them exactly how you were wounded. They'll take steps to better sterilize your wound. You'll likely get stitches if your wound is deep enough. Expect a tetanus shot for a puncture wound. ^{[11]
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Research source
hhttps://www.nhs.uk/common-health-questions/accidents-first-aid-and-treatments/do-i-need-a-tetanus-jab-vaccine-after-an-accident-or-injury/}
7
Monitor the wound until it heals. When you change the dressing, make sure the wound is developing a scab and gradually shrinking. Do not pick at the scab. ^{[12]
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PubMed Central
Journal archive from the U.S. National Institutes of Health
Go to source} Look for redness, swelling, or drainage and a foul odor. The color of the drainage is especially important and drainage that is thick and yellow, brown, or a sickly green color indicates that you may have an infection.
- If you see any of these signs or if the wound is not healing, seek medical help. You should also contact your doctor if you feel pain (beyond minor stinging) or warmth around the wound. ^{[13]
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Method 2

Method 2 of 2:

Caring for Surgical Wounds

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Remove any jewelry you have on your hands and/or wrists. Lather up your hands with warm water and bar soap or a few drops of liquid soap. Rub your hands together, scrubbing your palms, the backs of your hands, your fingers, and under your fingernails. Wash your hands for at least 20 seconds. Rinse your hands and dry them with a clean towel. ^{[14]
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2
Remove the old dressing. Your doctor will tell you how often to do this. First, peel away the surgical tape. Then, carefully remove the dressing covering the wound. Moisten the dressing if it sticks to the wound unless your doctor gave you other instructions. Toss the dressing in a lined trash can. ^{[15]
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- Make sure that you have all of your supplies ready on a clean surface before you remove the old dressing. ^{[16]
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3
Clean the wound with salt water or use the cleanser recommended by your doctor. Soak a piece of gauze in salt water ( saline solution ) or in the cleansing solution that your doctor has recommended. Gently blot the wound. If any blood or drainage has built up around the wound, gently rub that away with the saline-soaked gauze.
- Avoid using any antibacterial soaps or topical treatments. These could slow down the healing process and put you at risk for infection. ^{[17]
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If your doctor prescribes this method of cleaning, they'll give you a syringe for the process. First, fill the syringe with salt water. Then, hold the syringe 1 to 6 inches (2.5 to 15.2 cm) from the wound and spray any dried blood or drainage from the affected area. ^{[18]
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Make sure the wound is healing according to your doctor's expectations. Check for redness, swelling, warmth, numbness, pus, or a foul odor. Look for any evidence of reopening. If you notice any of these danger signs, call your doctor immediately. ^{[19]
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Use only the materials your doctor gave your or advised you to use. Follow their instructions to the letter. Keep your dressing supplies clean and sterile. ^{[20]
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Expert Q&A

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Question

How do you remove pus that is deep inside the wound of chronic osteomyelitis?

Sarah Gehrke, RN, MS
Registered Nurse
Sarah Gehrke is a Registered Nurse and Licensed Massage Therapist in Texas. Sarah has over 10 years of experience teaching and practicing phlebotomy and intravenous (IV) therapy using physical, psychological, and emotional support. She received her Massage Therapist License from the Amarillo Massage Therapy Institute in 2008 and a M.S. in Nursing from the University of Phoenix in 2013.

Sarah Gehrke, RN, MS

Registered Nurse

Expert Answer

Osteomyelitis is inflammation of bone caused by infection, generally in the legs, arm, or spine. Someone with Infection of the bone from an injury needs to seek medical attention for proper treatment. Intravenous infusions of antibiotics are likely needed. If the person is under medical care for this injury, the physician needs to be notified of any changes.

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Treat your wound as quickly as possible after getting injured. If you can't disinfect it right at that moment, put a bandage over it to keep it from being further exposed.

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Be patient while waiting for your wound to heal. Some cuts, especially large or deep ones, can take a long time. As long as you see evidence of healing without signs of infection, you're on the road to recovery.

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Warnings

Don't breathe or blow on open wounds. This can transfer germs. ^{[21]
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For severe wounds, don't try to push organs or broken bones back into the body. You could cause further damage. ^{[22]
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A tourniquet should only be used for a life-threatening situation, such as a severed artery. ^{[23]
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Don't try to pull a long or deeply embedded object out of a wound. If it penetrated a major artery, you could bleed to death. Seek medical attention immediately. ^{[24]
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hhttps://www.frontlinehealth.com/blog/first-aid/dont-remove-an-impaled-object/}

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Contact your doctor if you develop a fever of 100.5 °F (38.1 °C) or higher. ^{[25]
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Things You'll Need

Soap
Washcloth
Dry towel or cloth
Antibiotic product
Bandage
Tape
Cotton balls
Swabs
Salt water

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How to Disinfect a Wound

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Disinfecting Cuts and Scrapes

Caring for Surgical Wounds

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Tips

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