Repels moles, gophers, voles and other burrowing animals from lawns, gardens and planted areas. Castor oil, the active ingredient, repels moles and gophers with its taste, smell and feel. Environmentally friendly, biodegradable, not harmful to birds, pets or plants. Effective for up to 60 days.Click to see full answer. Keeping this in view, is castor oil poisonous to dogs?Originally it was cultivated to produce Castor Oil, a potent constipation remedy. The pods of this beautiful plant emit an odor that is very attractive to animals, especially dogs. The pods contain a bean that the animals readily eat. Only 8 beans are lethal to a medium sized dog.Also Know, is castor oil harmful to plants? Ricinoleic acid is the primary component of castor oil. The leaves of the castor bean plant are also poisonous causing transitory muscle tremors, ataxia, and excessive salivation. fatalities are rare in animals eating the leaves. An annual or short-lived perennial, growing to a small tree in warmer climates. Thereof, is castor oil safe for dogs eyes? It is very soothing to your eyes. I like using it and my naturopathic doctor said it was completely safe to use in my eyes and my dog’s eyes. They say the important thing to remember is the castor oil must be certified 100% organic, pure cold pressed, hexane free, and chemical free in order to be safe to put in eyes.Will castor oil kill my grass?Castor oil will not kill moles, but it will upset a mole’s digestive tract. Castor oil will make your lawn less appealing. Mix up three parts castor oil and one part dish soap. Mix four tablespoons of the deterrent into a gallon of water.