Alternative Fluorine free firefighting foam Micro-Blaze Out® is the only patented, microbial, Class A & B (non-AFFF) fire fighting agent on the market today. Micro-Blaze Out is non-toxic and biodegradable, making it the most environmentally responsible “Green” firefighting agent in the world. Micro-Blaze Out® is used at numerous fire fighting training centers in the U.S.