I haven’t tried the gel packs. I can’t say I even find the spray effective, because, although I get the feeling Chikara does something, I have no idea what. I am in the minority of people who absolutely love the smell though. If only there was a cologne that smelled exactly the same but lasted longer (Chikara’s scent usually fades after 30 minutes - 1 hr). I’ve heard some people think Axe Kilo smells the same, and I think it’s similar, but just doesn’t have the same depth of Chikara.