Product review (5 stars): Phenomenal product!
It's pretty rare for me to be as impressed with a chance-purchase as I am with this one.  We own a large-capacity cool-mist humidifier with a large, expensive filter/wick.  For the past several winters I have had to replace this filter within 6 weeks of starting to use it otherwise the stench would get so bad I would get complaints from the family.  No matter what I did the stench would build.  I've tried several things and while I've had minimal success with this or that, nothing has kept the problem in check.  I have wanted to put a touch of vinegar in the water but 1. Despite the fact my wife and I don't mind a mild smell of vinegar that would be just too much and 2. The filter instructions clearly say not to put vinegar in the water as that destroys the filter.  I was fighting a losing battle...

Until this Bacterialstat.

I cannot believe how effective this product really is.  Zero stink, the filter is lasting considerably longer than before - in fact I don't know how long it will last because I'm still using the one I started the season with and there is no problem with it.  I turn the filter over every few tankfuls to help cut down on mineral buildup (very effective, BTW) and just can't get over the fact that there is no smell at all coming from this yet.  I came back to Amazon to purchase another bottle as the first one is starting to get a little low and I refuse to be without the product - ever, again.  Sunbeam, you nailed this one!

Okay, I'm done - time to submit then go "Buy Again" this incredible product!