Invasive aquatic plants pose serious threats to all water bodies; they damage the ecosystem, cost money, and reduce water quality for recreational use. Aquatic plant invaders form dense mats of vegetation that block sun light and decrease any native plant from growing (which in turn decreases native wildlife which rely on the native plants). Once the invading plants begin to die the decomposers consume the oxygen in the water, creating an inhospitable environment for native aquatic species. These mats also pose a serious problem for boaters and others using the water for recreation. Boat propellers can very easily get stuck in the plant’s stalks and the thick weeds make it impossible to swim in invaded areas. Because they are in water bodies, aquatic plants are hard to remove effectively. Chemicals can spread quickly, so herbicides are difficult to use in invasive aquatic situations. To prevent the spread and establishment of invasive aquatic plants all recreational equipment must be properly cleaned after use, and boats should never be driven through invasive plants as they can be quickly spread through stem fragmentation.