Well, not nasty in that sense. Nasty in how they look, smell, or feel. I could have put an image on this page showing nasty feet. Believe me, Google has lots that would turn your stomach. I choose not to make you gag. Instead I have some solid advice.
Some athletes struggle with nasty feet. Years of running and pounding that pavement or dirt with these valuable appendages, quick showers, no showers, sticky socks, calluses, ingrown toenails, long untrimmed toenails, Athlete’s foot, new blisters, old blisters that haven’t healed, scars from deep old blisters, and more.
On top of that, add the possibility of hammer toes, Morton’s foot, flat feet, bunions, and scars from scrapes and puncture wounds and you have quite a challenge.
Here are a few tips on avoiding nasty feet.
Get a foot brush to use in the bath or shower. These are good to rid your skin of dirt and dead skin, especially around your toes and heels.

Get a high-quality toenail clipper. Preferably a flat edged one. Trim your nails as short as possible without exposing the skin at the corner of the nail. Trim straight across. Try and do this once a week.
Get a good nail file. These come in cheap emery board styles or more substantial long lasting files. Use one after trimming your nails to rounds the edges and smooth the corners so they don’t catch on your socks. The clippers show here are high quality. They can be purchased through FootSmart.com for about $12.00. If your nails are thick, you need more than the usual drug store clippers. I recommend these or a similar one.
Get a callus file, PedEgg, or a similar device to keep your calluses under control. Use it after showering when your skin is soft. Avoid going too deep. If you have thick calluses, it will take a while to get them under control, and
Get a high-quality foot cream to apply after you have done all the above.
If you have Athlete’s foot or toenail fungus, treat it. It’s that simple. Don’t treat it and you’ll be heading for more problems down the trail.
By sticking to an easy-to-follow regiment of foot care, your feet can avoid the nasty look.