A dude will call you on your Poketch (the dude at the zone), and he will tell you about how you can use those items, right? Well, behind him is a big ol' dorky looking computer. Use that to place the items in the zones.
Chat with our AI personalities
Safari Zone.
You get it on Mt. Silver or from the Safari Zone (Mountain) in the grass or with 5 Peak Objects.
safari zone i think, you need to put something like 15 objects in the rocky area.
In HeartGold you can find Larvitar on Mt. Silver or in the Safari Zone (in the 'Mountain' area).Safari Zone
In HeartGold/SoulSilver you can find a Ryhorn on Victory Road or in the Safari Zone. In the Safari Zone, it's in 'savannah' areas.