ThunderEssence Natural Essential Oil Aromatherapy Drops for Dogs, 0.5-oz; ThunderEssence Dog Calming Drops use 100% natural essential oils to produce a calming effect in anxious or overexcited dogs. Recommended by veterinarians, these drops contain lavender, chamomile and Egyptian geranium—oils that are used extensively in aromatherapy. ThunderEssence can be applied directly on your dog or dabbed on her bedding and blankets. You can also place a few drops on the ThunderSpray patch on any ThunderShirt to reinforce the feeling of relaxation. It’s the perfect pet-calming solution for thunderstorms, car and air travel, vet visits, kennel stays or having visitors stay in your home.