House & Garden Drip Clean is a 100% safe agent providing it is used in the right proportion. Drip Clean contains potassium and phosphors compounds, two very powerful and useful elements in the nutritional plan of the plant. These two compounds have had their chemical molecules changed to remove one of their structures. This makes the molecule into a kind of magnet, as molecules always try to complete themselves. Drip clean attracts dirt particles with every feeding, keeping the drip system clean. Drip Clean can also be used to keep your medium at an optimal EC-TDS level, saving you to flush as often as it will remove salt buildup. Drip clean never fails and is very effective against clogged dripper systems and piping.