Product review (5 stars): This stuff works. Can be a little foamy in a recirculating unit but works fabulously!
This stuff works. I'm using it in my&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Lasko-1128-Evaporative-Recirculating-Humidifier-9-Gallon/dp/B00FGLPCN8/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Lasko 1128 Evaporative Recirculating Humidifier, 9-Gallon</a>. My Lasko 1128 has been in service since Nov 1st, so 102 days, and the original filter that came with the Lasko still looks basically brand new aside from being wet.

FWIW, I do have a water softener and carbon+media filter on my incoming city water service. I don't think that matters much though. I've used various KAZ, Holmes and Bionaire humidifiers here over the last 4 years and never had this result prior to starting to use the BestAir 3BT-6 - even with Bionaire/Holmes' supposedly antibacterial filter wicks.

I use 1 capful in the tank of my Lasko 1128 every other refill. (It takes 2 full tanks to fill the Lasko 1128 up from empty.)

The photo is my filter after 102 days of continuous service.

My only complaint is the BestAir 3BT-6 solution can get a little foamy when filling the tank (if you pour it in first) and it gets a little foamy in the Lasko 1128's water reservoir because it recirculates the water continuously using a pump.

I'll put up with a little foam to get this kind of filter performance. In previous years, I would be looking at the filter wicks in my Bionaire/Holmes units with disgust by now when I wasn't using this. I probably could have saved myself the investment into a new humidifier if I had just been using this stuff with my previous humidifiers.