Pokéballs are for Pokémon only! Idk if this will help but just give it a check out link

they're designed for pokemons only, hence they're called pokeballs.

Thank you. Especially AninditaS. But, with what I read, could Pokeballs be retooled to ketch Digimon, or anything for that matter, if someone wanted it to?

^ Probably if a Pokeball is capabled to store or capture data, then yes! It would be like databall or better called a digiball. xD
~My opinion btw

Giggle!