Consumer Reports, in fact, rated four brands of DIY mold tests “Not Recommended”.  All homes will contain some level of spore activity when these samples are collected because mold is a common part of our environment. DIY kits, then, are essentially useless for diagnosing the complexity of your airborne mold contamination and therefore should be handled by professionals. The EPA agrees and states: “Sampling for mold should be conducted by professionals who have specific experience in designing mold sampling protocols, sampling methods, and interpreting results. Sample analysis should follow analytical methods recommended by…professional organizations.”