How to use: Open your Ooze Burger pack and start looking for the surprise elements like Crackle Slime, Jelly Slime, or Fizz Bomb. Check out the collectors guide to see which figures you can find. Notice that the slime in the sachet is stinky, so be careful when opening it. Maintenance: Keep your Ooze Burger pack and the collected figures in a dry and cool place to avoid damage. This product is for kids aged 5 and up, so make sure younger kids are supervised when playing with it.