A team reported a “set it and forget it” system to stop cyanobacteria-driven algae blooms using bacteria-busting buoys. In tests described in ACS ES&T Water, the tethered buoy design removed nearly all cyanobacteria without frequent reapplication. The approach targets the most damaging type of harmful algal blooms, including events that release toxins affecting humans and wildlife. By automating treatment distribution at the bloom site, the technology could reduce labor and improve response consistency during outbreaks. While not a drug or device in the traditional sense, the work represents applied biotech-adjacent innovation: microbial control in the environment is increasingly relevant for public health and food chain risk. The key next step is validating performance across varying water chemistry, bloom scales, and operational conditions to ensure effectiveness beyond initial laboratory or limited field tests.