Since the player can't battle inside the Safari Zone, they must throw bait or rocks before using ... and as a consequence, ...

But wait. When did you actually, physically throw a Pokeball? Swiping over colored pixels wasn’t enough for [Trey Keown], so he built a real, throwable, Pokemon-catching Pokeball for Pokemon Go.

The game recently released an update that removed the ability for players to summon creatures from Pal Spheres after they were thrown, in the same way one would throw a Pokeball to summon a Pokemon.