I recently had a wasp nest in my chimney that I sprayed.  They were entering through a hole in the mortar.  I assume that on the inside there is a nest between the brick and stove pipe (I have an inset).  Should this be a concern to me?  Or would it just quickly ignite and go up the original chimney?
	
		
			
		
		
	
				
			 
	 
	 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		