In order to eliminate fungal spores and foreign bodies, all tools that have contact with living wood (drilling, sawing, cutting) should be cleaned and disinfected immediately before use:
Alcohol is best suited to dissolve organic compounds such as fungal spores, fats, pollen. Alcohol = Ethanol can be used either in its pure form (expensive because of alcohol tax – but drinkable – or as a mixture in the form of isopropanol, spirit cleaner for the household, or similar).
Another possibility to clean the tool is to flame it with a Bunsen burner or similar.
Caution:
Do not use acetone – it is too aggressive and attacks plastic and paint!
When using other disinfectants, please make sure that they are environmentally friendly and harmless to health.
You can find more information on this under https://de.wikipedia.org/wiki/Desinfektion