I have a steri pen but just couldn't trust it on my last hunt. I was afraid I'd get the squirts in the middle of my hunt and wanted to try it closer to home. I carried it for light weight purification in my day pack, encase I needed it. You fellows who used it, do you feel that it does the job, it would be nice? We use UV light at most water treatment plants. I haven't heard any negative comments in my inquiries. Probably give it a try next time, especially if there are no cattle.
Well, I used mine a lot, without any trouble. There is a bit of trust you need I guess, but the technology is tested and verified. People feel confident with iodine or chlorine, and those methods are the least effective.