RainIons | 1,973 followers on LinkedIn. Cleans like Mother Nature, Only Better! | RainIons technology cleans the air via a unique combination of negative ions and precipitation. This new technology breakthrough replicates the way Mother Nature cleans the air, but instead of transferring the pollution from the air to the ground and water, the pollution will be captured inside the system so it can be completely eliminated from the environment. A feasibility study determined the patented innovation could reduce airborne pollutants by 99%, including Particulate Matter (PM) 2.5 and smaller, and CO2.