Gun cleaners aren't flammable?!?
Remington Rem Action Cleaner, "Use in well ventillated area, preferably outdoors. Do not use near sources of heat, sparks, or flame. Wear impermeable glove and safety goggles. Wash hands thoroughly.
Physical hazards. Extremely flammable. Product can explode or catch fire. Materials used to apply product will become fallable. Can may explode if heated above 120F (49C) or punctured."
Plus the dangers of breathing it in.
Tetra cleaner/lube spray. "Do not puncture, incinerate, store in direct sunlight or keep in temperatures above 120F (50C).
Strike Hold "Keep away from heat, sparks and open flame."
Hoppes, flammable.
Hoppes Benchrest copper solvent, "Contains kerosene." Flamable.
Shooters choice lead remover. "Keep away from flame."
Almost all oils are flammable too.
MPro-7, Hoppes Elite cleaner, and Slip 2000 might not be flammable, but they seem to be the exceptions.