Bests & Worsts Reviews from Amazon

I've used these drops for years and trusted them. On a May 2019 trip to Henry Coe State Park (CA), I treated a liter of clear water that had a couple of small but visible live (twitching) larvae floating around. (I'm not a microbiologist... maybe they were mosquito larvae; I'm not sure.) 30 minutes after treatment the larvae were still twitching! I mixed another batch of Aquamira drops and treated it again, waited another 30 minutes and still the larvae were alive! Yuck! My trust in this product is gone. My drops had NOT expired, and temperatures were mild. After the trip I called Aquamira customer service about 6 times over a three week period. I could't get anyone on the phone, nor would anyone return my messages. Their website even boasts "At Aquamira Technologies, we hate automated phone systems as much as you do. When you call Aquamira you will talk to a real person." Excuse me? 0 stars for product effectiveness and 0 for customer support.