Meet the Grill Grenade: an easy to use smoker box for your BBQ. You can use various blends to take your grilling game to a whole new level. The device is designed to take the guesswork out of the smoking process. It uses smoke cartridges, inside of which you can find a blend of natural wood, herbs, and spices. These cartridges are easy to clean too. This awesome product is on Kickstarter right now.