Garlic powder is dried, ground clove from the garlic plant. Garlic is valued for its anti-oxidant, anti-fungal, and anti-microbial properties as well as its flavour. Garlic should be used with caution, especially with dogs, as some reports have shown that it may have a negative effect on red blood cells. More and more companies are removing it from their foods, though in small quantities it should not present problems.