Learning how to use Decoy Grenades in Fortnite is important if you want to finish the TNTina’s Trial Challenges. Introduced in the new season, Epic Games created a new system of challenges. New characters revealed for Season 2 will hand out challenges instead of generic ones being handed out every week.
Each character has a certain personality which bleeds into their challenges. For TNTina, it's all about explosives and grenades.
How to Use Decoy Grenades in Fortnite
Like any grenade, using the Decoy Grenade is just about throwing it. You'll need to use a total of five decoy grenades to complete the challenge. When you use a Decoy Grenade, a cloud of smoke will appear as well as a mirage image of your character. They will start running in the direction you threw, hopefully distracting your enemies.
Experienced players probably won't fall for it, but it doesn't matter, throw five grenades at the ground and you'll be fine.
Decoy Grenades drop like any loot and can be found on the ground or in chests. They are found in groups of three, so you'll need to find at least two drops to complete the challenge.