One other thought. Clean water is also an essential first aid tool. For long day-hikes overnights and longer having some kind of water filter along is a good idea. Hiking filters like the Sawyer Squeeze with get rid of spores and bacteria which should reduce the chance of adding infection but for long trips I also carry Aqua Mira as a backup. It also kills viruses and so can be used as an addition for any particular gnarly water sources that are, say, near livestock. The main concern in the US is hantavirus spread by rodents. I would be inclined to add Aqua Mira to water used for cleaning any wounds that were more that a surface scratches. Aqua Mira takes 15 mins to work and staunching blood flow is more important on deep wounds so this is more for secondary cleaning.