The GrillKicker™ is a small smoke generator that sits on any BBQ grill or smoker and puts out lots of BBQ flavored smoke. The GrillKicker™ comes in 3 colors with refill cartridges available in 9 real wood flavors. Just insert the cartridge into the GrillKicker™, put a match in the window and let it smoke. Easy to use, no hassle and NO MESS. The GrillKicker comes with 2 hickory cartridges. Refill cartridges are available in 9 flavors - 4 cartridges per pack. A single cartridge will fill your bbq grill with 15 to 30 minutes of 100% natural bbq smoke for burgers, steaks, fish cutlets, and add real bbq flavor to anything on your gas, electric, even charcoal bbq grill.