you have grubs in your lawn, he's actually doing you a favor
having said that, live trap and drown is the best way to deal with them. an old chicken bone or anything like that will work - even cat food
I keep an old bed sheet to cover the trap with so they don't get too agitated before dropping the whole thing in a water trough, if you leave it on the trap all the time they will pull it in through the holes, so just wait and gently cover in the morning.
NEVER hose down a sprayed area - it somehow binds the spray to whatever is there: dirt, wood, concrete the stink will last for months if it gets wet.
Most of the time the stink will wear away in a couple days, even off the dog so I don't even bother cleaning them if they get it.
There used to be an enzyme product called odor-gone that actually worked - probably some iteration still available, but tomato juice is a silly way to deal with it.