Another suggestion and one I don’t like is to use conibear traps. I don’t like them because they’re kill traps and you never know what’s going to get in them - a pet cat or someone’s dog. You’re less likely to have collateral damage with the KCN. It’s quite toxic stuff and works by reacting with the natural acidity in the soil to produce HCN gas which quickly builds up to lethal levels in their burrows, but still a better option than a trap that doesn’t care what it catches.
I often use those “dog proof” traps for opossums and sometimes get a raccoon in one, but then of course that doesn’t help with foxes (animal or human)!