I know, I read that, but cardboard is used to light camp fires and fireplace fires, it scares me. What if the fire retardant that is sprayed on the cardboard becomes weaker and weaker with time, 5 years, 10 years, like paint that becomes thinner, cracks, peels off, or fades away with time. I just hate that idea, but it's your house, Taffy, it's your daughter. You can do whatever you wanna do.