If you have access to an oven or microwave you can use a Ruby Clean If you get your hands on a kettle, you can use that and place your cup in a glass or the Ruby Clean and let boiling kettle water run over it a few times.
If you are hiking and camping you might want to consider taking anextra pan for your cup.
Another option is to use sterilizing tablets, such as Milton sterilizing tablets.
We do not recommend to use plain alcohol to sterilize it as it might be too strong on the material. Please make sure that wherever you go your hands are clean before handling the Ruby Cup!
Check our blog post Using on the Move to find out more.