WHOLE LOT EXPIRED-1 YR BEFORE SHELF LIFE DATE!!!

After investing $150 in these tablets, I was shocked to say the least when during a routine check of emergency items I discovered not one but ALL BOTTLES HAD GONE BAD!
Firstly, we live in Arizona, we have nearly nothing when it comes to humidity.
You can clearly see in my photos that damage was not due to water, or any elements from the outside.
They literally seem to have corroded from the inside out!
Advertised shelf life is 4 years and I purchased only 3 years ago. These should not have gone bad!
As far as I'm concerned, buying a product like this is like buying insurance.
Its value = benefits provided during an emergency situation.
THESE TABLETS EXPIRE LONG BEFORE ADVERTISED SHELF LIFE.
I HIGHLY RECOMMEND SEEKING OTHER OPTIONS!

Sent this to Puerto Rico as a relief supply for a friend. Works great.

Sent to some friends in Puerto Rico following the hurricane so that they have safe drinking water. I wish they didn't need it, but they do and this is effective so that they can have water to drink.

Do not buy. Package arrived with only cardboard backing. NO bottle. I cannot return it & have no one to contact for refund. Ripped off!

I love these tablets. They are portable to carry around, and easy to use. 2 tablets to a Liter (32 fl oz) of water, or 1 tablet to 500mL (~16fl oz) of water. Theses were bought because the initial potable aqua treatment tablets I bought from Dick's Sporting goods were running low. These are perfect to use during the winter where water will freeze in my filtration system and becomes a hassle to use. They are also nice to carry around in small kits, especially on vacations where you are limited in space and weight as to what you can bring with you. They'll also breeze through TSA without causing any issues.

Just a friendly warning to those who decide to purchase these: Water Purification tablets are made with Iodine, therefore after you use these tablets in untreated water, it'll turn the water a light yellowish-brown color. Don't fret, because it's the natural reaction Iodine takes in water. Also your water might taste funny/weird, it's most likely the taste of the iodine if you did it correctly. I'd recommend you drop a tablet in a bottle filled with regular sink water, have a couple of sips, and get used to the taste of it before you start using it out in the field or even for emergency uses.