Donât just make a burger, make it an ultimate burger. The Pit Boss Ultimate Burger Rub takes the backyard barbecue staple up a notch with a blend of salt, herbs, and spices. The Pit Boss Ultimate Burger Rub perfectly complements all beef, game, and poultry. Don't just make a burger, make the ultimate burger with this full-flavored blend of salt, garlic, onion, and pepper. Try it on potatoes too!