Product review (1 stars): and considered a PAN Bad Actor, this are chemicals that are one or ...
They fail to disclose how poisonous this product is in the review. If I had the opportunity to read all the warnings before hand I would have bought it.
You basically have to call the toxicity emergency center if the liquid touches you skin, eyes, if you swallow it, etc.
It is a PESTICIDE, and considered a PAN Bad Actor, this are chemicals that are one or more of the following: highly acutely toxic, cholinesterase inhibitor, known/probable carcinogen, known groundwater pollutant or known reproductive or developmental toxicant.

Just google the bacteriostatic ingredient in this product: dimethyl benzyl ammonium chloride.

The instructions say that you have to add a cap of liquid per gallon of water. This is really annoying because the cap is not designed to be used in that way. It is very small, so you end up overfilling it. Also once you put the cap in the bottle the poison leaks down leaving a trail if this nasty chemical.
I used gloves the first few times, but since I have to refill my humidifier twice a day it becomes a pain. Today I was in a hurry and decided that I could do it with no gloves. I spill a little bit over my index finger, and it has been numbed for an hour.

I am not using this anymore, I am going to try&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/ProTec-PC-1-Humidifier-Tank-Cleaning-Cartridge-Pack-of-2/dp/B000XPT0DK/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">ProTec PC-1 Humidifier Tank Cleaning Cartridge (Pack of 2)</a>.