BSF alternative for colder climate?

Is there any organism, not tropical, that is not a carrier of disease and able to process any type of food waste as BSF do? Maybe some kind of cockroach?

I am in hardiness zone 10, very close to the sea, in southern Italy, temperatures rarely drop below 4 degrees in winter.

I would like to find an effective system to dispose of all types of food waste, including spoiled meat and dairy products. Hermetia Illucens looks perfect and I find what she manages to do really impressive, but I could only use it in the summer and it is a big limit.

I would also be willing to use blatticomposting, although I have a certain phobia towards cockroaches. If I could find an animal that can do what BSF does, but more resistant to the cold, it would be fantastic to use it as a stool producer to feed red worms and simultaneously recycle waste.

Try this out:  
I did it in Berlin (much colder than south Italy) and it worked very nice.
If you adapted it to BSF needs (harvesting ramp, rearing chamber, etc.), please share with me.
All the best
Ricardo Beck

I'm vermicomposting in an old fridge set on its side.
I don't expect it to need any heat in the winter,  or a light bulb at most.
Maybe try BSF in such a vessel.