What are they? Bird deterrent ball covers are 100mm diameter UV stabilized black hollow plastic balls, manufactured in High Density Polyethylene. The bird control balls float on the surface of a liquid, automatically arranging themselves into a close packed formation to completely cover the liquid surface.
- Simple to install
- Maintenance free
- Proven track record with US dept of Fisheries & Wildlife
- UV stabilized HDPE, with over ten years life expectancy
- Changes in liquid levels
- Floating platforms