Nautique is a fast-acting, economical herbicide that provides localized control of nuisance and exotic plants with no use or irrigation restrictions and minimal risk to the environment. This copper-based herbicide works on contact for spot and local treatment of tough weeds like hydrilla, egeria and southern naiad. Nautique is formulated with 9% chelated copper and is the most concentrated chelated copper herbicide available. It may be used in lakes, rivers, reservoirs, ponds, potable water sources, crop and non-crop irrigation systems (ditches, canals and laterals), fish, golf course, ornamental, swimming and fire ponds and aquaculture including fish and shrimp.