Product review (1 stars): Might be a good product.
I can't really say if this is a good product or not.  I did use it a couple times but was afraid of it after reading all the instructions and cautions. I did wear rubber gloves for each filling of the tanks.  Quite often while I am filling one water tank on my humidifier, my cat would drink out of the open area so filling the tanks became a challenge.  Once I started using the product I could not let her drink the water.  I finally just stopped using the product.  I might try it again next year if I can figure out how to fill each tank and keep my cat out of the water.