Netting:
Got a bird that's a problem? Net it. Got bees trying to bite you? Get a suit with netting to protect you. Loose might be better, and layered to stop darts. Keep the stabbing point of the creatures away from skin. Thick batting and leather in layers will be surprisingly tough. Remember, they are still small and their weapons have relatively little force behind them. These same suits will resemble those used to train dogs, so they'll be effective against wolves.
Now make a tennis racket. Okay, don't call it that, but a broad weapon to suddenly stop them, but gentle enough you can hit another person with it to swat a fairy. You want a glorified fly swatter. Frying pans will work in a pinch. While the bones are proportionately stronger, they are also tiny and perforce must be light like a bird. Think of all the dead birds that hit windows, and realize these things are vulnerable. Traumatic shock and tissue damage will kill them quite effectively.
Now go on the offensive. Fairies are tiny and can't handle the cold. If they don't migrate, they'll need to hole up for the winter. Burn them out. If needed, burn the forests (so attack in the dry season as well). Find irritants like smoke and ash that will clog fairy lungs much faster than human ones. Toss them about and drive the vermin from their holes into your waiting nets. The women and children can bludgeon them with clubs as the men root them out. Hunt wolves with traps to extinction. This is survival of the fittest, and there's no room for Tinkerbell to live. It's her or us.