Liquid castile soap with peppermint acquired! The health food store tip was the magic. Thanks so much for your help, Jeanette_Isabelle and bws48!

EDIT: I just went to swap out the camp soap and toothpaste for the liquid castile soap in my pack. The lid on the camp soap had cracked and leaked. Thank goodness it was in a ziplock bag - but that leaked too. Thankfully I found it be I lost more than a maxi pad in my hygiene kit. Phew! And double thanks guys!