BBQr's Delight wood pellets are all natural (no preservatives), come in 14 flavors and are a great sustitution for using wood splits, chunks or chips. From what I could tell, 1/3 of a cup of these lasted the first 3-4 hours of my cook. Just make sure you use heavy duty aluminum foil and I would even recommend doubling up just to make sure you don't get any punctures in your foil pouch. Get them here on Amazon: www.amazon.com/s/?_encoding=UTF8&camp=1789&creative=390957&field-keywords=bbqr%27s%20delight&linkCode=ur2&sprefix=bbqr%27s%2Caps%2C159&tag=volleybalus-20&url=search-alias%3Daps More info here: bbqrsdelight.com/ Blog: bbqbros.net Facebook: www.facebook.com/BBQBrosBlog Twitter: twitter.com/#!/BBQBrosBlog Pinterest: pinterest.com/bbqbros/