When it comes to the lakes and stormwater ponds in a homeowners association, residents expect them to be healthy, beautiful, and functional. At the same time, they may be averse to the use of herbicides and algaecides for the management of these water resources. Though the pesticides used to eliminate aquatic weeds, algae, and toxic cyanobacteria are very low-risk, well-studied, and registered with the Environmental Protection Agency (EPA), residents sometimes prefer a 100% natural approach. With this in mind, property managers may find themselves in an uncertain situation. How do they meet the expectations of residents while keeping management costs as low as possible?