There were. For example, 2018: https://awionline.org/press-releases/barn-fires-killed-150000-farm-animals-2018#:~:text=Of%20the%20148%20barn%20fires,and%20New%20York%20(18). Barns are full of straw, grease, and dried wood, and probably haven't had electrical service work done in years, or decades. It's not uncommon to see old cloth wires and edison fuses in barns around here, all of it in advanced states of decay. Food processing plants are run to the breaking point, and are often coated with flammable materials that if not cleaned properly, will burn. It's unfortunately not an uncommon thing. HOWEVER, with prices rising and certain high-profile reptiles making noise about replacement foods, this stuff looks (and probably is) something worth going "Hmmm, oh yeah?" over.