St Patrick drove the snakes out of Ireland, the evidence for this being that there are no snakes in Ireland that are not owned by zoos or goths.
In the same way, St Patrick must have driven the moles out of Ireland, because there are no moles. Maybe he was a golfer and they ruined the greens.
Anyway, hardware chain B&Q apparently did not know this and stocked sonic mole repellers in Northern Irish stores for years, where they never sold.
@Nickiquote In these days of #enshittification I'm amazed they didn't introduce moles just to make the sales.