It’s certainly not impossible and although there are lots of products on the market, you can also try popping a couple of unused tea bags in your daps when you’ve finished wearing them to try and absorb the moisture and sweat (and bacteria) that leads to smelly shoes. Each foot has 250,000 sweat glands, and it’s the bacteria on the skin of your feet eating your sweat (ewww) that causes these odours.
Word to the wise… it’s probably not a great idea to brew up once you’ve used the teabags in your shoes, but you could re-use them to create the perfect home foot spa.