I unrolled about half of it and left the other half still rolled up. If your lighting it on a street or sidewalk it makes a hell of a mess. We recorded it at about 8 minutes, and when the fuse hit the left over roll of about 8,000 firecrackers it was almost deafening, and the amount of smoke was almost comical. 8 minutes of constant noise followed by 20 minutes of cleanup. No doubt I'll get these again and maybe even 2!