Product review (1 stars): Leaves pink mold in your humidifier
After trying this product I noticed a pink film forming on the base of my humidifier.  I was able to remove easily with a sponge.  The trouble started when the mold showed on the bottom of the tank in areas I could not reach with a sponge.  I had to use hot water and soap to get rid of it.  I do not recommend this procuct, you are much better of with a ProTec cleaning cartidge.