Introducing Sonar RTU Aquatic Herbicide—the newest formulation for successful do-it-yourself weed control for ponds. Sonar RTU is a Ready-To-Use formula that controls most troublesome pond weeds including Duckweed. No mixing, no need for spray equipment or a boat—simply apply directly into the water from the shoreline. Sonar* Ready-To-Use RTU represents an exciting new era in pond weed management for the do-it-yourselfer! The innovative new RTU formulation allows anyone to make water usable for recreation, bring fish populations back into balance and restore property values. It’s so simple that applying Sonar RTU doesn’t require any mixing, special spray equipment or a boat simply open the bottle and treat from the shoreline. Based on a ¼ acre pond with a 4 foot average depth, the initial application would be one quart of Sonar RTU. This treatment would be followed up by ½ quart 21 days after the initial treatment and another ½ quart 42 days after the initial treatment. In fact, Sonar RTU is so effective and simple to use, the results are guaranteed. We’re so sure that applications of Sonar RTU conducted according to directions will control target aquatic vegetation listed on the label that we’ll work with you until you see the results you expect. Sonar RTU and Duckweed Many pond owners consider duckweed to be their toughest aquatic weed problem. Duckweed is a very common nuisance aquatic weed that is spread from pond to pond via waterfowl or other wildlife. While it is commonly mistaken for algae, duckweed is actually a tiny plant with an explosive reproductive capacity that can completely cover a pond in just a few weeks to the point that the infested waterbody resembles a golf-course green. No other aquatic herbicide is more effective on duckweed. Sonar provides complete, long-lasting control of duckweed and other stubborn unwanted aquatic vegetation. Sonar RTU programs should be initiated in February thru the end of June for optimal results. Once an untreated pond has been allowed to top out with weeds, consumers should consider the use of Sonar AS or Sonar Q. Contact Aquatic Control for programs options and application dates.