55 Gallon Water Preserver Concentrate (5 years) Water Treatment Drops - Water Treatment For Drinking Water - Mayday Emergency Drinking Water - Defiance Fuel Water - Earthquake Water, Emergency Storage

I have bought these several times. I pour them in my 50 gallons drums when I fill them during hurricane season. They smell like chlorine. Not sure what’s in them but they last a long time. I had them last 6 months.

Great to use for a 240 gallon water storage take. After two years, I do not see any algae buildup on tank walls. Too bad the price has gone up from when I first purchased it.

Thank you. I truly needed this.

Works great but a bit pricy!

Convenient and easy to use this extended-time water preservation liquid. All I had to do was count 8 drops of this chemical for every gallon of water. This stabilizer was used with a Waterbrick that holds 3.5 gallons, therefore, I used just 28 drops per container. I now have 70 gallons of drinking water which will be good until March 2030.

great additive for storing water

If it does what it says good value and nice sized little bottle for what I needed.

This item is great for storing water for long term.