great be prepared to open all the doors as this make a lot of smoke best out doors ! but clears quickly ideal for disappering acts and magicians ! and having a laugh ! lots of smoke gauranteed ,lol !!!!.
These made a little bit of smoke, not loads but more than a normal fire would. Had to wrap it in 2 post-it notes to light it as just lighting it with a match or a lighter didn't work. I would probably go for the bigger and more expensive smoke grenades next time.