Product review (4 stars): Made easier to use.
I purchased this along with 3 BestAir L8-c filters for my Lasko humidifier. I fill the water container in a set tub. To ease the use of this water treatment, I drilled a small hole in the cap, so all I have to do is invert the bottle and squeeze a bit into the container each time I use it. I do it as the water is going into the bottom fill filter water container... Piece of cake.