If your shoes ever get too pungent, a little peppermint oil can freshen them up while you sleep. All you have to do is soak a cotton ball or two with a little peppermint oil, and stick them in your shoes overnight.
Photo by Vincent Teeuwen
By morning, they should be much less offensive. You can also experiment with using more or less oil to adjust the strength of the effect, so you don't end up smelling like a packet of Minties. If you don't have any peppermint oil laying around, you could use bicarb soda, your freezer or cat litter instead.
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