We&#39;re sorry to read about your disappointment with Miracle-Gro Moisture Control Potting Mix and appreciate your feedback.<br /><br />Fungal mold spores including mushroom producing fungus are a natural part of soils and mulch. It just takes the right conditions for the spores to develop into a fungus or mold. We do not sterilize our growing media as microorganisms are an important component of growing media. The fungus mold only becomes a problem if there is an overgrowth. Overgrowth occurs when the soil or mulch is too wet. Keep in mind that mold and fungus on growing media or mulch will go away with sunlight and air circulation.<br /><br />We want you to be confident in our products. For this reason, we offer a product guarantee to our consumers. At your earliest convenience, please reach out to us at 877-220-3089 if we can further assist.