Instruct: Classify the given review into positive or negative sentiment.
Query: Micromax version holds in moisture too much- causes mildew.

I have the version of this soil that says it has "Micromax" in it. I have left the bag open for months and the stuff will not dry out. That's not right and it makes me wonder what chemicals make it do that. I have successfully grown herbs in pots for years, but this soil causes mildew on top of the plants. I'm going back to mixing my own potting soil. "Soil" that doesn't ever dry out isn't real soil.