Q: orbit? extra? trident?
A: I'd suggest getting gum from Israel that specifies "non-kitneous," like 'Bazooka Joe' and 'Must' Most gums aren't made out of ingrediants that are chometz or kitneous, but it's difficult to ascertain whether or not they're contaminated with chometz, so buying israeli gum that specifies it as kosher for passover would be best.