Rocks are free throwables you use to distract enemies while sneaking. Toss one to pull a guard or Freaker away from your path. With the Rock On skill, a hit can stun weaker enemies.
Use it to move a sentry before a stealth kill or to slip past Freakers. It costs nothing, so throw them freely.
The Attractor makes more noise and Horde Swarmers still react to it. Rocks are free but useless against a Horde.
Attractor
The Attractor is a crafted noisemaker that draws nearby Freakers to it. You learn it after Do You Have My Back?. Use it to pull Freakers away or onto traps and bombs.
Attractor Bomb
The Attractor Bomb is a noisy explosive that pulls Freakers in before it goes off. Its recipe sits in the Wagon Road Ambush Camp bunker. It is the easiest way to group a pack and kill it at once.
Flashbang
The Flashbang is a military stun grenade you buy at camps from Trust level 2. It blinds and stuns enemies so you can get away or line up kills. It is cheap and handy against human ambushes.
Frag Grenade
The Frag Grenade is a military fragmentation grenade you cannot craft. Hot Springs, Lost Lake and Wizard Island sell them from Trust level 3. Use them on human groups behind cover and on tight Freaker packs.