The juice from the bulb is used as an insect repellent. An extract of the plant can be used as a fungicide. It is used in the treatment of blight and mould or fungal diseases of tomatoes and potatoes. If a few cloves of garlic are spread amongst stored fruit, they will act to delay the fruit from rotting. The growing plant is said to repel insects, rabbits and moles.
Dogs seem to be particularly susceptible.
Taking large quantities of Garlic may cause stomach problems, and will lead to bad breath and body odor. J. A. and Ayensu. A Modern Herbal. Future - A Resource and Information Centre for Edible and other useful plants.