This company claims the following
Season Shot is made of tightly packed seasoning bound by a fully biodegradable food product. The seasoning is actually injected into the bird on impact seasoning the meat from the inside out. When the bird is cooked the seasoning pellets melt into the meat spreading the flavor to the entire bird. Forget worrying about shot breaking your teeth and start wondering about which flavor shot to use!
More info on www.seasonshot.com
Is this for real? If so, the garlic shot will be popular with vampire hunters.