DayOne Response Waterbag

Now it's time for another 'Good Idea, Bad Idea.' Good Idea: the purification really works no matter how gross it looks while working, and it completely purifies a large amount of water. Bad Idea: Nearly impossible to clean completely as the brown stuff sticks to the bag like glue, it spills over a lot when closing the top, the spigot hose doesn't attach anywhere so it falls to the ground all the time, and the flow is very slow. Its worth the money no matter what other reviewers say (although if the price of the P&G packs are any indicator, you're really paying for those more than the bag), but probably more for base camp than survival prep. This has been another 'Good Idea, Bad Idea'.Update: After two summers of using the Day One and having seen negative reviews from people who don't even say they have bought the product, I'm increasing my rating. Everything above holds true, but understand that this is not just a purification/filtration unit for drinking water. It makes enough clean water to cook, do dishes, or wash off after a hike. It is not meant to compete or be like the Life Straw, Grayl, or even the Sawyer filters. I still say it is worth the price and a great product. If the review you've read just complains about how other products cost less that they believe do the same thing, without actually talking about this product, then I have no idea if they even bought the product or used it at all. I have. I paid for it. I didn't get it for free, and while I won't say it's the best product to have ever been invented, I think it's a pretty great one that I use each summer. Hopefully, for many more summers.

Not what I was expecting

6 of us ran approx 150 liters through this rig during a 6 night stay in Pioneer Basin (10,400', N of Mono Pass in the Eastern Sierra). Once we became accustomed to the simple procedure and timing it requires, we were very pleased. Be aware once you fill the bag and add the purifier powder you have to agitate for 5 min and wait another 25 min before you can use the water, and you must clean the bag (quick scrub and rinse) after each use. We had a 10 liter collapsible plastic cube plus some smaller water containers, so once we got ahead of consumption the delayed gratification was not inconvenient. Not effortless but beats the pants off all our pump-style filters, and also the Sawyer gravity system we tried some years back which was a complete non-starter. FYI we were filtering clear water at the outlet of a sub-alpine lake. This was likely not a challenge for the P&G technology but is representative of the water sources we prefer on backcountry trips. Would be interested to hear the experience of someone who's used this where there's visible algae and/or suspended matter.Recommended

Purchased the DayOne Response waterbag to keep in our disaster relief kit. Arrived quickly, and was well packaged. The 10 liter capacity bag comes with a filter and large syringe for backflushing, P&G purification packets, a tool to open the packets, carrying straps, and a strap for hanging a full bag. The excellent instructions are illustrated and easy to follow. Everything is made from appropriate and excellent quality materials and components. We now have everything needed to collect, transport, purify, and store water in the event of an emergency. After carefully checking this item out, I realized how useful it could be in other applications. Am thinking it will make a great gift for hikers and hunters, and could be very useful on a boat. I hope we never have to use it for it's intended purpose, but am comforted by the fact that we have an efficient, high quality water purification system on-hand if it's needed. Highly recommended!

I'm writing this to ward off others. There are cheaper, smaller, more efficient and better alternatives. Life straw and others like it and variations of it/them.

I go backpacking every year with a group of buddies. Day one response is amazing and filters a lot of water at one time. its easy to carry large amounts of water back to camp and i have not had an issue from using it.

Bulkier than I thought but it rolled up into a bag and that's pretty much it a clear plastic bag with straps and a filter on the side. It will do the job and holds a lot of water. Nothing worse than carrying a five gallon jug to camp even if it's just a quarter mile away. This makes it convenient.

What has become of AMAZON?!? This is a bladder with purification tablets. I don't have this, nor do I want it...you want a long term solution? Get a life straw, and any container that fits in a pack.