The Pet Food industry is fully aware of hidden dangers that fungi in foods represent.  The very same dangers lurk in human foods too yet the general  public is totally ignorant of the risks.  Aflatoxins are commonly found in corn, peanuts, cottonseed, milk, and tree nuts.  Aflatoxins B1, B2, G1 and G2 are four naturally-occurring forms of aflatoxins, with aflatoxin B1 being the most potent, prevalent and carcinogenic.  Some mycotoxins are highly toxic and all fungi and their mycotoxins are 100% organic.  This link uploads the peer-reviewed report.