I have a similar problem right now though in multiple places and whilst you know where they are heading, I don't have clue.
My frogs are everywhere, don't seem to have a purpose other than entertain Beti and just don't eat enough slugs when they get to slug-eating proportion.
I'm just about done with Autumn trimming-back so frogs can settle-down. Whilst we're all right now being changed from considering differences, different-approaches and looking for alternatives we are actually half-way to the modern concept of 0 or 1. Or yes-no.
Think about it.