Get Away® Mole Repellent 32 oz. Hose Sprayer This mole repellent contains castor oil which gives moles an upset stomach. The repellent coats the grass and penetrates the soil. The best benefit is that the residue is non-toxic and not oily. This Liquid Mole Repellent repels moles from lawns and ornamental turf areas. One quart covers 5,000 sq. ft. Should be reapplied every 5-6 weeks or after a rainfall. The active ingredient is Castor Oil.