Cleaning your toenails takes just a few minutes a day and comes down to three basics: washing with soap and water, gently removing debris from under the nail, and drying thoroughly. Most people skip at least one of these steps, which is how buildup, odor, and eventually fungal infections take hold. Here’s how to do it right.
The Daily Cleaning Routine
Wash your feet every day with warm, soapy water, paying attention to the spaces around and under each toenail. A soft nail brush (or even a clean, soft toothbrush) is the best tool for loosening dirt and dead skin from under the nail edge. Work the bristles gently across the top of each nail and underneath the free edge in short, light strokes.
Avoid using sharp tools like metal scrapers, pocket knives, or scissors to dig under your toenails. These can separate the nail from the nail bed, a condition called onycholysis, which creates a gap where fungi and bacteria thrive. If you can’t get debris out with a soft brush and soapy water, that’s a sign the nail needs to be trimmed shorter, not that you need a sharper instrument.
Drying is just as important as washing. Fungal organisms love moisture, so after cleaning, dry your feet completely, including between the toes and around each nail. A dedicated foot towel helps, and washing that towel in hot water (at least 60°C, or about 140°F, for a 45-minute cycle) kills the dermatophyte fungi responsible for most nail infections. Washing socks at the same temperature is equally important. A quick warm-water cycle at 30°C won’t eliminate these organisms.
What That Buildup Under Your Nail Actually Is
The white or yellowish gunk that collects under toenails is mostly keratin, the same protein your nails are made of. As new nail cells grow, older cells get pushed forward, harden, and sometimes crumble or flake off underneath. Dead skin cells, sock lint, sweat residue, and everyday dirt mix in. In healthy nails, regular brushing keeps this under control.
When the buildup becomes thick, discolored, or foul-smelling, that’s a different situation. Fungal organisms can invade through tiny cracks in the keratin or surrounding skin and trigger an infection. In advanced cases, the nail thickens significantly as the body produces excess keratin in response. You can’t clean your way out of a fungal nail infection. If you notice nails that are unusually thick, crumbly, discolored (yellow, brown, or white), or lifting away from the nail bed, that’s a medical problem, not a hygiene problem.
Soaking to Soften Thick or Tough Nails
If your toenails are thick or hard to clean, a warm soak before your cleaning routine makes a big difference. Fill a basin with warm water deep enough to cover your feet and add about half a cup of Epsom salt. Soak for 30 to 60 minutes, up to twice a week. This softens the nail and the skin around it, making it easier to brush away debris and trim without cracking the nail.
For nails you suspect might be infected, a soak in lukewarm soapy water followed by an antiseptic ointment and a bandage can help in the short term while you arrange to see a provider. Don’t try to clip away the infected portion yourself.
How to Trim Toenails Correctly
Trimming is part of keeping toenails clean, because shorter nails collect less debris. But how you cut matters. Trim straight across, leaving the nail long enough that the corners rest loosely against the skin on each side of the toe. Don’t round the edges, don’t cut into a V-shape, and don’t go too short. Rounding or cutting too close forces the nail edge to grow into the surrounding skin, which is how ingrown toenails start.
Use clean, sharp nail clippers rather than scissors or dull tools that crush the nail. If your nails are thick, trim them right after a soak when they’re softest.
Keeping Your Tools Clean
Nail clippers, files, and brushes can harbor the same fungi and bacteria you’re trying to wash away. After each use, soak metal tools in at least 70% isopropyl alcohol for a minimum of 30 minutes, making sure they’re fully submerged. Let them air dry completely before storing. Replace nail brushes regularly, and never share tools between family members if anyone has a nail or skin infection.
Leave the Cuticles Alone
It’s tempting to push back or trim the cuticles while you’re cleaning your toenails. Don’t. The cuticle is a thin seal between the nail plate and the skin, and even a small nick can let bacteria in and cause an infection. This is one of the most common mistakes in home pedicures. If cuticle skin looks rough or overgrown, gently pushing it back with a soft towel after a soak is the safest approach.
Daily Habits That Keep Nails Cleaner Longer
Change your socks at least once a day, more often if your feet sweat heavily. Moisture-wicking materials help, and silver-infused fabrics have demonstrated real antifungal properties by disrupting fungal respiration. Cotton socks absorb sweat but hold it against the skin, so synthetic blends designed for moisture management are a better choice for people prone to fungal issues.
Check your feet regularly for cuts, sores, swelling, dryness, or changes in nail color and thickness. Catching problems early, before fungi get established, is far easier than treating an entrenched infection. Shoes that let your feet breathe, rotating between pairs so each has time to dry out, and avoiding walking barefoot in shared wet spaces like gym showers all reduce your exposure to the organisms that cause trouble in the first place.
Signs That Cleaning Isn’t Enough
Some toenail problems can’t be solved with better hygiene. See a podiatrist if you notice any of the following:
- Thickened nails that are painful or difficult to trim, even after soaking
- Nail lifting or detachment from the nail bed
- Signs of infection including redness, swelling, warmth, pus, or foul odor around the nail
- Persistent discoloration (yellow, brown, white, or black) that doesn’t improve with regular cleaning
- Nail deformities like deep ridges, pits, or unusual shapes, which can signal autoimmune conditions or nutritional deficiencies
Fungal nail infections don’t resolve on their own, and over-the-counter treatments have limited success for moderate to severe cases. A provider can confirm whether the issue is fungal, bacterial, or something else entirely, and recommend treatment that actually works.