In reply to Sam Edwards:
I have had terrible problems with smelly shoes, friends complaining just for bringing them into the car (even if inside a bag) and from this I have learned what works and nowadays I have no problems at all.
Freezing:
ot much use, doesn't kill the bacteria, only makes them inactive but as soon as you unfreeze they go active again.
Washing:
95 degrees C (desperate yes
), definitely worked as it is hot enough to kill almost all existing kinds of bacteria, downside is that all glue from the sides of the shoes were lost as well, but reglued and they looked OK afterwards.
60 degrees C might work (70 would probably work 95%) and might not damage the glue, anyone who tried?
40 degrees C and lower only makes the bacteria feel comfortable (25-45=growth) so the only reason to wash in this temperature is to wash away the substance but it doesn't kill any bacteria that manages to stay in the shoes. I have tried 40 degrees C with reasonable results (took away much of the smell and didnt reshape the shoes too much). The reason to wash in 40 and not lower is only that it better dissolves the dirt and removes particles.
After use:
Keep in open environment. Suberb results can be achieved by drying them after each practise, I simply but them on top of the heating element (but i guess you can use something else as well) to dry after each time I use them and due to that the smell is so limited that you actually can do that without scenting the room..
Too me it felt a bit unenvironmental to wash a single pair of climbing shoes so i bought two more pairs of the same kind. So now I switch between the three and then wash them at the same time. I have never tried to use any sprays etc. I doubt any of those work and if they do work I would definitely not want to get skin-contact with them.
Would be interesting to know what happens if shoes are washed in 60 degree C, anyone who tried?