Most people will sell you something to kill the grubs in your soil without telling you that that material will also, most likely, kill your earthworms which are really the main source of food for moles. so even if you kill off all the grubs, and leave the earthworms, in your soil you will still have moles. Contrary to what the snake oil salespeople tell you there is no solution that will "get rid of moles".
Many people, that have actually done this, have found that spraying 1 pint of castor oil over 2,500 square feet about every 5 to 8 weeks will move the moles out. But those that have tried to commercial castor oil containing sprays say that does not work and they do not because there is less than 1 pint of castro oil in the mix and they tell you to spray too large an area.