Load up on 12 gauge and get a few of these (click on pic):
Be careful not to shoot you eye out.
My husband said that we couldn’t defend ourselves against a hoard but I said we could use the backhoe to dig a wide ditch and put sharpened bamboo on the bottom.
Our plus is that we live in the desert and they would already have to be prepared to get here. They’d have to have gas, water and food because there is very little natural vegetation to eat and no water to be had.
With clear fields of fire, you’d only have to pick off a couple at distance and they’d move to greener pastures. Remember, they will NOT be interested in gaining territory, only goods and women.