If you placed the packets properly and the fire is burning properly, then the color comes out very well !! We had a fire with the basic dimensions of 50cm x 70 cm and it had been burning for about 2 hours. Just before we threw two of the parcels in the glow we placed again after a couple of pieces of wood, thus neatly flames were present. The parcels we have then placed ziehmlich centrally in the middle of the glow and the color effect occurred directly. The burning time of the colors I would tap on the specified 30-120 min, mainly because the colors again flared up as we means of an air pump and new logs produced renewed large flames !!
I'll remember that this product definitely and still use multiple !!
