Mold testing, combined with infrared scans and visual inspection methods, is the best non-invasive method to assess the extent and types of mold in your home. Most people test for mold when they smell an unusual odor, see discolored spots, or become sick for no apparent reason.  Because mold growth often is caused or accelerated by moisture, many people also test for mold after a significant water-related property issue, e.g., heavy rains cause water penetration in the basement, dishwasher floods the kitchen, washing machine floods the laundry room, etc. Testing before remediation helps to establish baseline conditions and the scope of any possible remediation; testing after remediation ensures that the mold has been properly mitigated.