Microbial is one of only a few products available today that can make the claim of being totally environmentally friendly.
Microbial contains an organic dispersant, a non-ionic surfactant,and a quaternary ammonium compound used as a preservative. Microbial DOES NOT contain any of the following harmful chemicals unlike a lot of other horticulturally based pesticides and fungicides:
TBT (Tributyl Tin Oxide)
Or for that matter any other ingredients that may be poisonous or toxic to humans, animals or plant species.
Material safety data sheets on "Microbial" are also available, click here