I have ten years' experience selling travel water bottles and I know what's good.
I supported these bottles's project since 2017, after many delays we received our bottles in summer of 2018. In the beginning they failed in less than a month but we were able to get replacements quite easily. In December we got our 2nd replacement bottles and since then they have worked quite well. There is a slight change in the taste of the water after the UVC led is on. The water tastes slightly better. We use now the bottle in a frequent basis, from 6 to 10 times per day. If you sum all those bottles, the investment in the bottles pays it off very quickly.
I purchased the top of the line bottle. I informed Larq. They asked me some questions and for picture evidence of the broken technology. I did everything and then Larq has not responded for more than month. They suck. Waste of money.
I think I'm on my third Larq bottle at this point? Maybe fourth? Every single one I've had has red-ringed (instead of working and cleaning your water, it displays a red ring and is nonfunctional forever). Larq has been very good about replacing bottles, but enough is enough. This is brutal. I'm done.