There is a fourth possibility ...I carry a 50 ml dry powder spray can of povidone/iodine. Dont know if its available where you are though.

For cleaning out wounds I carry 500 ml of clean water and a 20 ml tube of sterile saline. Plus the usual wipes. The povidone/iodine spray is for treating the dogs as it is much easier to get to awkward fur covered wounds with it in the field.