I mean if you’re outside with a weed burner cooking rocks it’s not a great idea.. I’ve torched little areas without harm thou.. using a chisel and hammer is the best removal of all of you can find them once you’ve pulled the rock.. it’s hard to find them cause they turn to jelly and almost clearOh, ok.
I just thought putting fire to rock was never a good idea. Like I said, I have no experience with this.