i just loaded a bunch into a pokeball (green bin) and unloaded them slowly ing The Hole. enough didnt die to stop them spawning. but of course that was when the bins held infinite. now they just hold one. Still doable but itd have to be one at a time. also i dont think ive seen them spawning in the current version after clearing them from the map after the big event. (youll know the event i mean if youve seen it.) but maybe ive just been lucky. havent spent too many days of in game time as i only play on stream, so maybe i just havent been in game long enough for them to spawn again haha. But yea, just trapping a bunch is the way to do it, if they still spawn.