Some of the tests are actually quite reliable, but they can be difficult to read correctly without the proper experience. Additionally, these tests don't give a full picture of the issue, as they don't tell you what kind of mold is present, where it's located and if it's toxic or not.

TLDR About Mold In Your House Mold is everywhere both inside and outside of your home. Mold tests that rely on air sampling are extremely ineffective, cause unnecessary fear, and could be considered nothing more than snake oil.

Mold testing involves two main methods: air sampling and surface sampling. Both types require analysis by a certified laboratory. In some cases, the local health department can test the mold samples.