The rangers can probably use a bunch of different ideas to solve the problem. They are aware that isolating Pokémon from the psychic influence long enough to break its hold works, and they know disrupting the psychic energy works. So I'm thinking- Sweet Scent/Sleep Powder/Cotton Spore/Spore etc to deal with actively rampaging Pokémon, any shield/energy disruption/status lifting/field protecting moves to break the influence? Thinking like Mist, Haze, Light Screen, Heal Bell, Aromatherapy, Defog, Misty Terrain. All the rangers in the different areas have different ways of combating this and they work with different Pokémon depending on what they have and which are around. And it's going to be a huge mass effort at first for a week or so, but there will def be misc Pokémon that didn't get fixed so the rangers will be working for a while on this. But they know how to deal with any reports, so yay!