I carry a 100cc syringe with a fixed plastic tip for that. It works better than a blast from a bike bottle to get bugs out of ears, and is pretty good for flushing eyes & wounds when clean water is scarce.That is a tough one.....once a wound is closed it is closed for good usually.....so if you are going to close it CLEAN it, CLEAN it really really well....
I actually missed adding a small syrnige with a blunt needle to the list (I am working surgical recovery as I type this)...the pressure washes out dirt and bugs.
I was glad to see you stress using pressure dressings over tourniquets. Both have their place, but I've seen many examples of tourniquets applied when they weren't necessary. I think the popularity of devices like the CAT has led to some of the overuse. I don't want someone cranking down a tourniquet on me unless it's needed, and the risk of causing other damage is secondary to the blood loss.