Bengal Ultradust 2X Fire Ant Killer kills on contact and works as ants spread the dust through the colony to the queen. It provides long lasting control for up to eight months and acts faster than bait products. The odorless dust does not clump or absorb moisture and requires no water for application. Easy to use with a shaker canister, it is safe for use on roses and ornamental plants and is also effective against crazy ants.