The answer to 'what is stink bug' is a stink bug is a type of shield-shaped insect that gets its name from the foul odor it releases when disturbed or threatened. Stink bugs are common household pests that can infest homes, gardens, and agricultural crops. They are typically brown or green in color and range in size from 1/2 to 1 inch long.
Stink bugs feed on a variety of plants, including fruits, vegetables, and ornamental plants. They use their piercing-sucking mouthparts to extract the juices from their host plants, which can cause damage and discoloration. Stink bugs are not known to bite or sting humans, but their unpleasant odor can be a nuisance if they invade your home.